[hal, wpilib] Remove analog accumulator and analog gyro (#7697)

The 2 high level classes were temporarily kept to keep the examples compiling. We will remove those when we have the interface into the built in IMU.

hal/src/main/native/cpp/jni/HALUtil.h

@@ -75,9 +75,6 @@ void SetCanStatusObject(JNIEnv* env, jobject canStatus,
 void SetMatchInfoObject(JNIEnv* env, jobject matchStatus,
                         const HAL_MatchInfo& matchInfo);
 
-void SetAccumulatorResultObject(JNIEnv* env, jobject accumulatorResult,
-                                int64_t value, int64_t count);
-
 jbyteArray SetCANDataObject(JNIEnv* env, jobject canData, int32_t length,
                             uint64_t timestamp);