x86: h264_qpel: Simplify an #if conditional

The extra conditions are covered by previous #ifs and conditional compilation.

libavcodec/x86/h264_qpel.c

@@ -497,7 +497,7 @@ QPEL16_OP(mc31, MMX)\
 QPEL16_OP(mc32, MMX)\
 QPEL16_OP(mc33, MMX)
 
-#if ARCH_X86_32 && HAVE_YASM && CONFIG_H264QPEL // ARCH_X86_64 implies SSE2+
+#if ARCH_X86_32 // ARCH_X86_64 implies SSE2+
 QPEL16(mmxext)
 #endif