Revert "coin: Generate JUnit result files"

This reverts commit c7ddaa9f58.

Reason for revert: Broke integrations

Change-Id: I21ffb3b16e361a48a5d9b7a528d150e51519623c
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

coin/instructions/cmake_setup_running_tests_env_vars.yaml

@@ -20,13 +20,8 @@ instructions:
 
         file=os.path.basename(sys.argv[1])
         timestamp = str(round(time.time() * 1000))
-        results_path = home + "/work/testresults/"
-        results_base = results_path + file + "-" + timestamp
-        testargs = [
-          "-o", results_base + ".xml,xml",
-          "-o", results_base + ".junitxml,junitxml",
-          "-o", "-,txt"
-        ]
+        results_file = home + "/work/testresults/" + file +"-" + timestamp + ".xml,xml"
+        testargs = ["-o", results_file, "-o", "-,txt"]
         if re.search("testlib.selftests.tst_selftests", sys.argv[1]):
             testargs = []
         exit(subprocess.call([sys.argv[1]] + testargs))