Remove unnecessary APPLE specific code (#1188)

To reduce differences between tests, remove APPLE specific code from
unary tests as no other test have similar logic.

Ensure gMeasureTimes is consistently initialised regardless of operating
systems to ensure a consistent command line interface.

The remaining APPLE specific pieces of code relate either to include
paths, or to the implementation of PreventSleep(), ResumeSleep() and
GetTime(). Those are not removed in this commit.

Signed-off-by: Marco Antognini <marco.antognini@arm.com>

test_conformance/math_brute_force/main.cpp

@@ -62,11 +62,7 @@ static int32_t gEndTestNumber = -1;
 int gSkipCorrectnessTesting = 0;
 int gStopOnError = 0;
 static bool gSkipRestOfTests;
-#if defined(__APPLE__)
-int gMeasureTimes = 1;
-#else
 int gMeasureTimes = 0;
-#endif
 int gReportAverageTimes = 0;
 int gForceFTZ = 0;
 int gWimpyMode = 0;
@@ -805,11 +801,6 @@ int main(int argc, const char *argv[])
         return -1;
     }
 
-#if defined(__APPLE__)
-    struct timeval startTime;
-    gettimeofday(&startTime, NULL);
-#endif
-
     error = ParseArgs(argc, argv);
     if (error) return error;
 
@@ -866,14 +857,6 @@ int main(int argc, const char *argv[])
 
     ReleaseCL();
 
-#if defined(__APPLE__)
-    struct timeval endTime;
-    gettimeofday(&endTime, NULL);
-    double time = (double)endTime.tv_sec - (double)startTime.tv_sec;
-    time += 1e-6 * ((double)endTime.tv_usec - (double)startTime.tv_usec);
-    vlog("time: %f s\n", time);
-#endif
-
     return ret;
 }
 
@@ -1211,9 +1194,6 @@ test_status InitCL(cl_device_id device)
         return TEST_FAIL;
     }
 
-#if defined(__APPLE__)
-    // FIXME: use clProtectedArray
-#endif
     // Allocate buffers
     cl_uint min_alignment = 0;
     error = clGetDeviceInfo(gDevice, CL_DEVICE_MEM_BASE_ADDR_ALIGN,