protos: Remove unused protos (#18372)

Signed-off-by: Ryan Northey <ryan@synca.io>

Mirrored from https://github.com/envoyproxy/envoy @ 67cb2aef1b84bef6751723068255bcaa77853685

envoy/extensions/filters/http/ratelimit/v3/rate_limit.proto

@@ -8,7 +8,6 @@ import "envoy/config/route/v3/route_components.proto";
 import "envoy/type/metadata/v3/metadata.proto";
 
 import "google/protobuf/duration.proto";
-import "google/protobuf/wrappers.proto";
 
 import "udpa/annotations/status.proto";
 import "udpa/annotations/versioning.proto";

envoy/service/auth/v3/external_auth.proto

@@ -12,7 +12,6 @@ import "google/rpc/status.proto";
 import "envoy/annotations/deprecation.proto";
 import "udpa/annotations/status.proto";
 import "udpa/annotations/versioning.proto";
-import "validate/validate.proto";
 
 option java_package = "io.envoyproxy.envoy.service.auth.v3";
 option java_outer_classname = "ExternalAuthProto";