Android: Disable androidtestrunner extra timeout

We already have:

a, a timeout as part of QtTest. By default it lets each test function
   run for 5 minutes. This timeout can be configured using
   QTEST_FUNCTION_TIMEOUT.
b, maxTimeBetweenOutput in the CI. The CI will kill the process if too
   much time passes between individual output lines of a test.
c, maxTimeInSeconds in the CI. This does exactly the same as the
   androidtestrunner timeout.

The CI timeouts can be centrally tuned per platform and Qt module. This
is preferable over a special timeout just for android.

As other people may be using androidtestrunner for unrelated projects,
don't delete the timeout, but simply disable it from CMake by setting
it to -1.

Task-number: QTBUG-106479
Task-number: QTBUG-101596
Task-number: QTBUG-100242
Change-Id: If4ce00948e204182bb12ac4859d3b0dd193de7ad
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Dimitrios Apostolou <jimis@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

cmake/QtPlatformAndroid.cmake

@@ -203,6 +203,7 @@ function(qt_internal_android_test_arguments target out_test_runner out_test_argu
         "--skip-install-root"
         "--make" "${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target ${target}_make_apk"
         "--apk" "${apk_dir}/${target}.apk"
+        "--timeout" "-1"
         "--verbose"
         PARENT_SCOPE
     )

src/tools/androidtestrunner/main.cpp

@@ -397,7 +397,8 @@ static bool waitToFinish()
     // Wait to finish
     while (isRunning()) {
         std::this_thread::sleep_for(std::chrono::milliseconds(250));
-        if ((clock::now() - start) > g_options.timeout)
+        if (g_options.timeout >= std::chrono::seconds::zero()
+                && (clock::now() - start) > g_options.timeout)
             return false;
     }
     return true;