gallium/util: remove empty file u_half.h

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6774>

src/util/format/u_format_pack.py

@@ -715,7 +715,7 @@ def generate(formats):
     print()
     print('#include "pipe/p_compiler.h"')
     print('#include "util/u_math.h"')
-    print('#include "util/u_half.h"')
+    print('#include "util/half_float.h"')
     print('#include "u_format.h"')
     print('#include "u_format_other.h"')
     print('#include "util/format_srgb.h"')

src/util/half_float.c

@@ -28,10 +28,10 @@
 #include <math.h>
 #include <assert.h>
 #include "half_float.h"
-#include "util/u_half.h"
 #include "rounding.h"
 #include "softfloat.h"
 #include "macros.h"
+#include "u_math.h"
 
 typedef union { float f; int32_t i; uint32_t u; } fi_type;
 

src/util/tests/format/u_format_test.c

@@ -30,7 +30,8 @@
 #include <stdio.h>
 #include <float.h>
 
-#include "util/u_half.h"
+#include "util/half_float.h"
+#include "util/u_math.h"
 #include "util/format/u_format.h"
 #include "util/format/u_format_tests.h"
 #include "util/format/u_format_s3tc.h"