Move -Wno-error=format from external NoOverride to external flags

Test: presubmit
Bug: 315250603
Change-Id: Ib1ed2aed52818e177c1b40da17e192606308243a
diff --git a/cc/config/global.go b/cc/config/global.go
index fac3388..9e39190 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -339,6 +339,9 @@
 
 		"-Wno-unused",
 		"-Wno-deprecated",
+
+		// http://b/315250603 temporarily disabled
+		"-Wno-error=format",
 	}
 
 	// Similar to noOverrideGlobalCflags, but applies only to third-party code
@@ -367,9 +370,6 @@
 		"-Wno-gnu-offsetof-extensions",
 		// TODO: Enable this warning http://b/315245071
 		"-Wno-fortify-source",
-
-		// http://b/315250603 temporarily disabled
-		"-Wno-error=format",
 	}
 
 	llvmNextExtraCommonGlobalCflags = []string{