[protobuf] Suppress warnings

We aren't planning to fix these, so they are just noise.

Change-Id: Iaa454517984b46b5a44ac5ada84e889d89389e64
diff --git a/BUILD.gn b/BUILD.gn
index 4aaa9c6..d6bc4ac 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -57,18 +57,18 @@
   if (is_clang) {
     # These are all needed as of https://github.com/protocolbuffers/protobuf/releases/tag/v3.21.12
     cflags += [
-      "-Wno-error=deprecated-pragma",
-      "-Wno-error=enum-enum-conversion",
-      "-Wno-error=extra-semi",
-      "-Wno-error=float-conversion",
-      "-Wno-error=implicit-float-conversion",
-      "-Wno-error=implicit-int-conversion",
-      "-Wno-error=implicit-int-float-conversion",
-      "-Wno-error=invalid-noreturn",
-      "-Wno-error=missing-field-initializers",
-      "-Wno-error=sign-compare",
-      "-Wno-error=unused-function",
-      "-Wno-error=unused-private-field",
+      "-Wno-deprecated-pragma",
+      "-Wno-enum-enum-conversion",
+      "-Wno-extra-semi",
+      "-Wno-float-conversion",
+      "-Wno-implicit-float-conversion",
+      "-Wno-implicit-int-conversion",
+      "-Wno-implicit-int-float-conversion",
+      "-Wno-invalid-noreturn",
+      "-Wno-missing-field-initializers",
+      "-Wno-sign-compare",
+      "-Wno-unused-function",
+      "-Wno-unused-private-field",
     ]
   }
 }
diff --git a/BUILD.input.gn b/BUILD.input.gn
index 663707a..5afc49a 100644
--- a/BUILD.input.gn
+++ b/BUILD.input.gn
@@ -53,18 +53,18 @@
   if (is_clang) {
     # These are all needed as of https://github.com/protocolbuffers/protobuf/releases/tag/v3.21.12
     cflags += [
-      "-Wno-error=deprecated-pragma",
-      "-Wno-error=enum-enum-conversion",
-      "-Wno-error=extra-semi",
-      "-Wno-error=float-conversion",
-      "-Wno-error=implicit-float-conversion",
-      "-Wno-error=implicit-int-conversion",
-      "-Wno-error=implicit-int-float-conversion",
-      "-Wno-error=invalid-noreturn",
-      "-Wno-error=missing-field-initializers",
-      "-Wno-error=sign-compare",
-      "-Wno-error=unused-function",
-      "-Wno-error=unused-private-field",
+      "-Wno-deprecated-pragma",
+      "-Wno-enum-enum-conversion",
+      "-Wno-extra-semi",
+      "-Wno-float-conversion",
+      "-Wno-implicit-float-conversion",
+      "-Wno-implicit-int-conversion",
+      "-Wno-implicit-int-float-conversion",
+      "-Wno-invalid-noreturn",
+      "-Wno-missing-field-initializers",
+      "-Wno-sign-compare",
+      "-Wno-unused-function",
+      "-Wno-unused-private-field",
     ]
   }
 }