Sync from Piper @431959314

PROTOBUF_SYNC_PIPER
diff --git a/objectivec/GPBEmpty.pbobjc.h b/objectivec/GPBEmpty.pbobjc.h
index 45600ea..8a31c04 100644
--- a/objectivec/GPBEmpty.pbobjc.h
+++ b/objectivec/GPBEmpty.pbobjc.h
@@ -1,21 +1,9 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/protobuf/empty.proto
 
-// This CPP symbol can be defined to use imports that match up to the framework
-// imports needed when using CocoaPods.
-#if !defined(GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS)
- #define GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS 0
-#endif
-
-#if GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS
- #import <Protobuf/GPBDescriptor.h>
- #import <Protobuf/GPBMessage.h>
- #import <Protobuf/GPBRootObject.h>
-#else
- #import "GPBDescriptor.h"
- #import "GPBMessage.h"
- #import "GPBRootObject.h"
-#endif
+#import "GPBDescriptor.h"
+#import "GPBMessage.h"
+#import "GPBRootObject.h"
 
 #if GOOGLE_PROTOBUF_OBJC_VERSION < 30004
 #error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.