Remove unused parameter displayId

The parameter is not currently used in InputDispatcher.

Test: presubmit
Bug: none
Change-Id: I61f9e6566e4fe77318814e56e73b7f3470fa6a04
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 0d9d6b0..1f906e4 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -106,8 +106,7 @@
     virtual bool transferTouchFocus(const sp<IBinder>& fromToken,
                                     const sp<IBinder>& toToken) override;
 
-    virtual status_t registerInputChannel(const sp<InputChannel>& inputChannel,
-                                          int32_t displayId) override;
+    virtual status_t registerInputChannel(const sp<InputChannel>& inputChannel) override;
     virtual status_t registerInputMonitor(const sp<InputChannel>& inputChannel, int32_t displayId,
                                           bool isGestureMonitor) override;
     virtual status_t unregisterInputChannel(const sp<InputChannel>& inputChannel) override;