Remove unnecessary clang-cl check since Clang has __builtin_bswap.

include/SDL_endian.h

@@ -109,7 +109,7 @@ extern "C" {
 
 #if HAS_BUILTIN_BSWAP16
 #define SDL_Swap16(x) __builtin_bswap16(x)
-#elif defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__clang__)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
 #pragma intrinsic(_byteswap_ushort)
 #define SDL_Swap16(x) _byteswap_ushort(x)
 #elif defined(__i386__) && !HAS_BROKEN_BSWAP
@@ -165,7 +165,7 @@ SDL_Swap16(Uint16 x)
 
 #if HAS_BUILTIN_BSWAP32
 #define SDL_Swap32(x) __builtin_bswap32(x)
-#elif defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__clang__)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
 #pragma intrinsic(_byteswap_ulong)
 #define SDL_Swap32(x) _byteswap_ulong(x)
 #elif defined(__i386__) && !HAS_BROKEN_BSWAP
@@ -224,7 +224,7 @@ SDL_Swap32(Uint32 x)
 
 #if HAS_BUILTIN_BSWAP64
 #define SDL_Swap64(x) __builtin_bswap64(x)
-#elif defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__clang__)
+#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
 #pragma intrinsic(_byteswap_uint64)
 #define SDL_Swap64(x) _byteswap_uint64(x)
 #elif defined(__i386__) && !HAS_BROKEN_BSWAP