Revert "Enable -Wfortify-source"

This reverts commit cbf426fa50b60d843b0792618208e850cc6123df.

Reason for revert: Droidmonitor triggered revert due to build breakage in b/352395522. Will be verifying through ABTD before submission.

Change-Id: I214aa6e2a707ed22aac901db988a33affc37e269
diff --git a/cc/config/global.go b/cc/config/global.go
index d2faff2..62a4765 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -376,6 +376,8 @@
 		"-Wno-unqualified-std-cast-call",
 		"-Wno-array-parameter",
 		"-Wno-gnu-offsetof-extensions",
+		// TODO: Enable this warning http://b/315245071
+		"-Wno-fortify-source",
 	}
 
 	llvmNextExtraCommonGlobalCflags = []string{