Remove requestCursorUpdatesFromImm() again

This CL removes an unused method

  RemoteInputConnectionImpl#requestCursorUpdatesFromImm(),

which was originally introduced [1] then removed [2], and
accidentally added again [3].

Anyway, this method is no longer used and can be removed safely.

 [1]: I3d6b1728d62139785593af14c24cb52bf2c91e31
      71aa1a31d1
 [2]: Ia72a9fe0ceac1798ee1989eaae3906e8e1b696bf
      5854c92bad
 [3]: I53bcb62e03ac1c371feb60d1385c88c921754092
      3e3ff1a3d2

Bug: 210039666
Test: presubmit
Change-Id: I4d0bf0ac371e1f9f214258906231d6ae85bdce3e

core/java/android/view/inputmethod/RemoteInputConnectionImpl.java

@@ -1015,27 +1015,6 @@ final class RemoteInputConnectionImpl extends IRemoteInputConnection.Stub {
         });
     }
 
-    /**
-     * Dispatches {@link InputConnection#requestCursorUpdates(int)}.
-     *
-     * <p>This method is intended to be called only from {@link InputMethodManager}.</p>
-     * @param cursorUpdateMode the mode for {@link InputConnection#requestCursorUpdates(int, int)}
-     * @param cursorUpdateFilter the filter for
-     *      {@link InputConnection#requestCursorUpdates(int, int)}
-     * @param imeDisplayId displayId on which IME is displayed.
-     */
-    @Dispatching(cancellable = true)
-    public void requestCursorUpdatesFromImm(int cursorUpdateMode, int cursorUpdateFilter,
-            int imeDisplayId) {
-        final int currentSessionId = mCurrentSessionId.get();
-        dispatchWithTracing("requestCursorUpdatesFromImm", () -> {
-            if (currentSessionId != mCurrentSessionId.get()) {
-                return;  // cancelled
-            }
-            requestCursorUpdatesInternal(cursorUpdateMode, cursorUpdateFilter, imeDisplayId);
-        });
-    }
-
     @Dispatching(cancellable = true)
     @Override
     public void requestCursorUpdates(InputConnectionCommandHeader header, int cursorUpdateMode,