Remove support for MSVC

sky/engine/wtf/Assertions.cpp

Index: sky/engine/wtf/Assertions.cpp
diff --git a/sky/engine/wtf/Assertions.cpp b/sky/engine/wtf/Assertions.cpp
index b28511eb63bea76b4bc6a56d181358d35f77918c..f737e129d7a275accbb9cd85349b3f09afef932f 100644
--- a/sky/engine/wtf/Assertions.cpp
+++ b/sky/engine/wtf/Assertions.cpp
@@ -70,7 +70,7 @@ static void vprintf_stderr_common(const char* format, va_list args)
     vfprintf(stderr, format, args);
 }
 
-#if COMPILER(CLANG) || (COMPILER(GCC) && GCC_VERSION_AT_LEAST(4, 6, 0))
+#if COMPILER(CLANG) || COMPILER(GCC)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 #endif
@@ -103,7 +103,7 @@ static void vprintf_stderr_with_trailing_newline(const char* format, va_list arg
     vprintf_stderr_common(formatWithNewline.get(), args);
 }
 
-#if COMPILER(CLANG) || (COMPILER(GCC) && GCC_VERSION_AT_LEAST(4, 6, 0))
+#if COMPILER(CLANG) || COMPILER(GCC)
 #pragma GCC diagnostic pop
 #endif