Remove the fallback message in the Intrinsics check

Summary: The message is useful once, but not for every time the header is included and the condition checked.

Reviewed By: shixiao

Differential Revision: D9457501

fbshipit-source-id: 35c2c2f0510e9be9b747ab7c760a7cc36ad500b4

folly/container/detail/F14IntrinsicsAvailability.h

@@ -23,9 +23,6 @@
 #define FOLLY_F14_VECTOR_INTRINSICS_AVAILABLE 1
 #else
 #define FOLLY_F14_VECTOR_INTRINSICS_AVAILABLE 0
-#pragma message                                                      \
-    "Vector intrinsics / F14 support unavailable on this platform, " \
-    "falling back to std::unordered_map / set"
 #endif
 
 #if FOLLY_SSE_PREREQ(4, 2) || __ARM_FEATURE_CRC32