Move printing sub-test information into test harness (#421)

This removes all the duplicated code from each test, and moves it to
test harness so that we have single place where this information is
printed.

Signed-off-by: Radek Szymanski <radek.szymanski@arm.com>

test_conformance/half/main.c

@@ -123,11 +123,6 @@ exit:
         }
     }
 
-    if(gFailCount > 0)
-    {
-        vlog_error("FAILED %d sub-tests.\n", gFailCount);
-    }
-
     ReleaseCL();
     return error;
 }