remove extra thumb directive from trampoline

Differential Revision: D3087319

fb-gh-sync-id: 667582a468f2b3686b897a1f0aa9b3b966519c86
shipit-source-id: 667582a468f2b3686b897a1f0aa9b3b966519c86

React/Profiler/RCTProfileTrampoline-arm.S

@@ -10,10 +10,6 @@
 #include "RCTDefines.h"
 #include "RCTMacros.h"
 
-#if defined(OSMETA_PLATFORM_WINDOWS) && (defined(__arm__) || defined(__thumb__))
-.thumb
-#endif
-
 #if RCT_DEV && defined(__arm__)
 
   .thumb