Make the Windows build slightly quieter.

Change-Id: I6914691628c5ece4564be2bf60e17484081188fe
Reviewed-on: https://boringssl-review.googlesource.com/16509
Reviewed-by: Adam Langley <agl@google.com>

crypto/CMakeLists.txt

diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index 2bce08e..ba6ae07 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -47,10 +47,8 @@
   endif()
 else()
   if (CMAKE_CL_64)
-    message("Using nasm")
     set(PERLASM_STYLE nasm)
   else()
-    message("Using win32n")
     set(PERLASM_STYLE win32n)
     set(PERLASM_FLAGS "-DOPENSSL_IA32_SSE2")
   endif()