Remove attempt at detecting compile-time HLE

There's no __HLE__ macro and there won't be, since the HLE prefix can be
run on older CPUs. There's no need for runtime detection.

Change-Id: Ib306f8f647014b399b87ffff13f1daba0e654b02
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

src/corelib/tools/qsimd.cpp

@@ -499,8 +499,7 @@ static const int features_indices[] = {
 static const int features_count = (sizeof features_indices - 1) / (sizeof features_indices[0]);
 
 // record what CPU features were enabled by default in this Qt build
-// don't define for HLE, since the HLE prefix can be run on older CPUs
-static const uint minFeature = qCompilerCpuFeatures & ~HLE;
+static const uint minFeature = qCompilerCpuFeatures;
 
 #ifdef Q_OS_WIN
 #if defined(Q_CC_GNU)

src/corelib/tools/qsimd_p.h

@@ -265,9 +265,6 @@ static const uint qCompilerCpuFeatures = 0
 #if defined __RTM__
         | RTM
 #endif
-#if defined __HLE__
-        | HLE
-#endif
 #if defined __AVX2__
         | AVX2
 #endif