Removed insignificant of qmltest again

Blacklisted or skipped broken and unstable test functions. Some
are moved to tests/auto/qmltest-blacklist folder.

Task-number: QTBUG-33723
Task-number: QTBUG-38290
Task-number: QTBUG-53778
Task-number: QTBUG-53779
Task-number: QTBUG-53780
Task-number: QTBUG-53781
Task-number: QTBUG-53782
Task-number: QTBUG-53785
Task-number: QTBUG-53793
Change-Id: I35594d0d054f4f5719f6549536a1fc5bd7e2518f
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

tests/auto/qmltest/BLACKLIST

@@ -3,3 +3,10 @@
 *
 [SelfTests::test_blacklistWithData:test2]
 *
+[tst_grabImage::test_equals]
+linux
+[Text::test_linecount]
+osx
+windows
+[TextInput::test_doublevalidators]
+osx

tests/auto/qmltest/listview/tst_listview.qml

@@ -272,6 +272,7 @@ Item {
         }
 
         function test_asyncLoaderCurrentIndexChange() {
+            skip("more details in QTBUG-53780")
             for (var i = 0; i < 500; i++) {
                 asyncLoaderCurrentIndexListView.currentIndex = 0;
                 asyncLoaderCurrentIndexListView.currentIndex = 1;
@@ -284,6 +285,7 @@ Item {
         }
 
         function test_asyncListViewLoader() {
+            skip("more details in QTBUG-53780")
             for (var i = 0; i < 50; i++) {
                 wait(10);
                 asyncListViewLoaderView.currentIndex = 0;

tests/auto/qmltest/qmltest.pro

@@ -11,5 +11,5 @@ importFiles.path = .
 DEPLOYMENT += importFiles
 
 DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0
-CONFIG+=insignificant_test # QTBUG-33723
-
+# Please do not make this test insignificant again, thanks.
+# Just skip those unstable ones. See also QTBUG-33723.

tests/auto/qmltest/window/tst_clickwindow.qml

@@ -75,6 +75,8 @@ Item {
         when: windowShown
 
         function test_clickBothWindows() {
+            if (Qt.platform.os === "linux" || Qt.platform.os === "windows")
+                skip("more details in QTBUG-53785")
             mouseClick(ma, 20, 20);
             verify(ma.everClicked);
             mouseClick(ma2, 20, 20);