Remove comments and small things from repo that mention roboRIO (#9020)

The RoboRIO classes need to be fixed up, those are huge.

hal/src/main/java/org/wpilib/hardware/hal/CANAPIJNI.java

@@ -55,7 +55,7 @@ public class CANAPIJNI extends JNIWrapper {
    *
    * <p>This ID is 10 bits.
    *
-   * <p>The RoboRIO will automatically repeat the packet at the specified interval
+   * <p>The Systemcore will automatically repeat the packet at the specified interval
    *
    * @param handle the CAN handle
    * @param apiId the ID to write (0-1023)
@@ -105,7 +105,7 @@ public class CANAPIJNI extends JNIWrapper {
    *
    * <p>This ID is 10 bits.
    *
-   * <p>The RoboRIO will automatically repeat the packet at the specified interval
+   * <p>The Systemcore will automatically repeat the packet at the specified interval
    *
    * @param handle the CAN handle
    * @param apiId the ID to write (0-1023)

hal/src/main/java/org/wpilib/hardware/hal/HALUtil.java

@@ -32,15 +32,15 @@ public final class HALUtil extends JNIWrapper {
   public static final int RUNTIME_SIMULATION = 1;
 
   /**
-   * Returns the roboRIO serial number.
+   * Returns the Systemcore serial number.
    *
-   * @return The roboRIO serial number.
+   * @return The Systemcore serial number.
    * @see "HAL_GetSerialNumber"
    */
   public static native String getSerialNumber();
 
   /**
-   * Returns the comments from the roboRIO web interface.
+   * Returns the comments from the Systemcore web interface.
    *
    * @return The comments string.
    * @see "HAL_GetComments"

hal/src/main/java/org/wpilib/hardware/hal/PowerJNI.java

@@ -11,7 +11,7 @@ package org.wpilib.hardware.hal;
  */
 public class PowerJNI extends JNIWrapper {
   /**
-   * Gets the roboRIO input voltage.
+   * Gets the Systemcore input voltage.
    *
    * @return the input voltage (volts)
    * @see "HAL_GetVinVoltage"
@@ -61,9 +61,7 @@ public class PowerJNI extends JNIWrapper {
   public static native void resetUserCurrentFaults();
 
   /**
-   * Set the voltage the roboRIO will brownout and disable all outputs.
-   *
-   * <p>Note that this only does anything on the roboRIO 2. On the roboRIO it is a no-op.
+   * Set the voltage the Systemcore will brownout and disable all outputs.
    *
    * @param voltage The brownout voltage
    * @see "HAL_SetBrownoutVoltage"

hal/src/main/java/org/wpilib/hardware/hal/SerialPortJNI.java

@@ -26,7 +26,7 @@ public class SerialPortJNI extends JNIWrapper {
    * Initializes a serial port with a direct name.
    *
    * <p>This name is the /dev name for a specific port. Note these are not always consistent between
-   * roboRIO reboots.
+   * Systemcore reboots.
    *
    * @param port the serial port to initialize
    * @param portName the dev port name

hal/src/main/native/include/wpi/hal/HAL.h

@@ -57,14 +57,15 @@ const char* HAL_GetLastError(HAL_Status* status);
 const char* HAL_GetErrorMessage(int32_t code);
 
 /**
- * Returns the roboRIO serial number.
+ * Returns the Systemcore serial number.
  *
- * @param[out] serialNumber The roboRIO serial number. Free with WPI_FreeString
+ * @param[out] serialNumber The Systemcore serial number. Free with
+ * WPI_FreeString
  */
 void HAL_GetSerialNumber(struct WPI_String* serialNumber);
 
 /**
- * Returns the comments from the roboRIO web interface.
+ * Returns the comments from the Systemcore web interface.
  *
  * @param[out] comments The comments string. Free with WPI_FreeString
  */

hal/src/main/native/include/wpi/hal/Power.h

@@ -19,7 +19,7 @@ extern "C" {
 #endif
 
 /**
- * Gets the roboRIO input voltage.
+ * Gets the Systemcore input voltage.
  *
  * @param[out] status the error code, or 0 for success
  * @return the input voltage (volts)
@@ -81,10 +81,7 @@ void HAL_ResetUserCurrentFaults(int32_t* status);
 double HAL_GetBrownoutVoltage(int32_t* status);
 
 /**
- * Set the voltage the roboRIO will brownout and disable all outputs.
- *
- * Note that this only does anything on the roboRIO 2.
- * On the roboRIO it is a no-op.
+ * Set the voltage the Systemcore will brownout and disable all outputs.
  *
  * @param[in] voltage The brownout voltage
  * @param[out] status the error code, or 0 for success

hal/src/main/native/include/wpi/hal/SerialPort.h

@@ -42,7 +42,7 @@ HAL_SerialPortHandle HAL_InitializeSerialPort(HAL_SerialPort port,
  * Initializes a serial port with a direct name.
  *
  * This name is the /dev name for a specific port.
- * Note these are not always consistent between roboRIO reboots.
+ * Note these are not always consistent between Systemcore reboots.
  *
  * @param[in] port     the serial port to initialize
  * @param[in] portName the dev port name

hal/src/main/native/include/wpi/hal/handles/HandlesInternal.hpp

@@ -115,7 +115,7 @@ static inline bool isHandleType(HAL_Handle handle, HAL_HandleEnum handleType) {
 /**
  * Get if the version of the handle is correct.
  *
- * Do not use on the roboRIO, used specifically for the sim to handle resets.
+ * Do not use on the Systemcore, used specifically for the sim to handle resets.
  *
  * @param handle  the handle
  * @param version the handle version to check
@@ -128,7 +128,7 @@ static inline bool isHandleCorrectVersion(HAL_Handle handle, int16_t version) {
 /**
  * Get if the handle is a correct type and version.
  *
- * Note the version is not checked on the roboRIO.
+ * Note the version is not checked on the Systemcore.
  *
  * @param handle     the handle
  * @param enumType   the type to check
@@ -161,7 +161,7 @@ inline int16_t getHandleTypedIndex(HAL_Handle handle, HAL_HandleEnum enumType,
 /**
  * Create a handle for a specific index, type and version.
  *
- * Note the version is not checked on the roboRIO.
+ * Note the version is not checked on the Systemcore.
  *
  * @param index      the index
  * @param handleType the handle type