[NFC] Remove duplicate symbol declarations (#1671)

* [NFC] Remove duplicate symbol declarations

Those are provided by testHarness.h.

Signed-off-by: Kévin Petit <kpet@free.fr>

* add missing include

---------

Signed-off-by: Kévin Petit <kpet@free.fr>

test_conformance/conversions/basic_test_conversions.cpp

@@ -13,6 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
+#include "harness/testHarness.h"
 #include "harness/compat.h"
 
 #include "basic_test_conversions.h"

test_conformance/conversions/basic_test_conversions.h

@@ -54,7 +54,6 @@ extern const char *gRoundingModeNames[ kRoundingModeCount ];        // { "", "_r
 extern const char *gSaturationNames[ kSaturationModeCount ];        // { "", "_sat" }
 extern const char *gVectorSizeNames[kVectorSizeCount];              // { "", "2", "4", "8", "16" }
 extern size_t gTypeSizes[ kTypeCount ];
-extern int gIsEmbedded;
 
 //Functions for clamping floating point numbers into the representable range for the type
 typedef float (*clampf)( float );

test_conformance/conversions/test_conversions.cpp

@@ -799,10 +799,6 @@ static int RunKernel(cl_kernel kernel, void *inBuf, void *outBuf,
     return 0;
 }
 
-#if !defined(__APPLE__)
-void memset_pattern4(void *dest, const void *src_pattern, size_t bytes);
-#endif
-
 #if defined(__APPLE__)
 #include <mach/mach_time.h>
 #endif