Revert "SF: Update InputFlinger outside main thread"

This reverts commit 42a27b5657975485a72033736f37bfe6de0e21a8.

Reason for revert: <Breaking presubmit tests>
Bug: 207839663
Change-Id: Ic066d5a44339128a59e8aa3bb488a41cad13cf76
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index bb7e1a4..f848e4f 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -546,7 +546,9 @@
 }
 
 bool InputWindowCommands::empty() const {
-    return focusRequests.empty() && !syncInputWindows;
+    bool empty = true;
+    empty = focusRequests.empty() && !syncInputWindows;
+    return empty;
 }
 
 void InputWindowCommands::clear() {