redhat/configs: leave -Werror off for now

Bugzilla: https://bugzilla.redhat.com/2159468
Upstream Status: RHEL only

Kernel builds now have a configuration to enable -Werror or not, see:
b875bd389865 ("Enable '-Werror' by default for all kernel builds")

Leave the configuration turned off until new warnings are attended.

Signed-off-by: Eric Chanudet <echanude@redhat.com>

Author: eric-ch

redhat/configs/common/generic/CONFIG_WERROR

@@ -0,0 +1 @@
+# CONFIG_WERROR is not set