Revert GTK focus bug workarounds

This reverts the last few commits which worked around a focus bug
in GTK. This bug is now (I hope) fixed, so I'm dropping the
workarounds so the tests will confirm whether it's fixed.

needles/gnome/apps/nautilus/nautilus_desktop_folder_listed.json

@@ -1,16 +0,0 @@
-{
-  "properties": [],
-  "tags": [
-    "nautilus_desktop_folder_listed"
-  ],
-  "area": [
-    {
-      "xpos": 270,
-      "ypos": 139,
-      "width": 97,
-      "height": 20,
-      "type": "match",
-      "match": "90"
-    }
-  ]
-}

tests/applications/gnome-text-editor/aaa_setup.pm

@@ -44,14 +44,6 @@ sub run {
 
     # Check that the document has been opened
     assert_screen("gte_text_file_opened");
-
-    # Sometimes, we experienced that the application did not have
-    # correct focus when the cursor was outside of the text area,
-    # therefore we perform an extra click to place the cursor
-    # inside the text area.
-    assert_and_click("gte_line_word");
-    # Move to cursor to the beginning of the file.
-    send_key("ctrl-home");
 }
 
 sub test_flags {

tests/applications/nautilus/aaa_setup.pm

@@ -38,11 +38,6 @@ sub run {
 
     # This will test the common directory structure. The structure is always created when a user is created, so let's see if it has been created correctly.
     assert_screen("nautilus_available_directories");
-
-    # Sometimes, Nautilus do not respond to keyboard shortcuts because
-    # it does not have correct focus. Click inside the file list view
-    # to get the focus correctly.
-    assert_and_click("nautilus_desktop_folder_listed");
 }
 
 sub test_flags {