Revert "Remove flags rejected by RBE input processor"

This reverts commit a4724a0c4e3cbbc22d47f3581d445e6d9cb217ad.

Reason for revert: reclient has an updated deps scanner now.
Bug: http://b/248371171
Test: enable RBE; RBE_CLANG_TIDY_EXEC_STRATEGY=remote; make tidy-soong_subset


(cherry picked from https://android-review.googlesource.com/q/commit:2c36e5efceae94424b513878cf6dc4e9640651ab)
Merged-In: Id876bd7eee1e5606f8dc05903f77f135b47da360
Change-Id: Id876bd7eee1e5606f8dc05903f77f135b47da360
diff --git a/cc/builder.go b/cc/builder.go
index 3f582fa..69cf75b 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -681,16 +681,11 @@
 			tidyCmd := "${config.ClangBin}/clang-tidy"
 
 			rule := clangTidy
-			reducedCFlags := moduleFlags
 			if ctx.Config().UseRBE() && ctx.Config().IsEnvTrue("RBE_CLANG_TIDY") {
 				rule = clangTidyRE
-				// b/248371171, work around RBE input processor problem
-				// some cflags rejected by input processor, but usually
-				// do not affect included files or clang-tidy
-				reducedCFlags = config.TidyReduceCFlags(reducedCFlags)
 			}
 
-			sharedCFlags := shareFlags("cFlags", reducedCFlags)
+			sharedCFlags := shareFlags("cFlags", moduleFlags)
 			srcRelPath := srcFile.Rel()
 
 			// Add the .tidy rule