Remove wtautological warnings added during toolchain update

Bug: b/301328082

Change-Id: I0bf10e4a9456dff1b3a521ca13cb5170e738f80a
diff --git a/cc/config/global.go b/cc/config/global.go
index d3c2658..b21d56c 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -367,8 +367,6 @@
 		"-Wno-gnu-offsetof-extensions",
 		// TODO: Enable this warning http://b/315245071
 		"-Wno-fortify-source",
-		"-Wno-tautological-negation-compare",
-		"-Wno-tautological-undefined-compare",
 	}
 
 	llvmNextExtraCommonGlobalCflags = []string{