Remove explicit close() from Gyro interface (#1152)

It's not needed, as extending AutoClosable is enough.

wpilibj/src/main/java/edu/wpi/first/wpilibj/interfaces/Gyro.java

@@ -62,10 +62,4 @@ public interface Gyro extends AutoCloseable {
    */
   @Deprecated
   void free();
-
-  /**
-   * Free the resources used by the gyro.
-   */
-  @Override
-  void close();
 }