Squish: Remove Qt4 compatibility code

Thank you Qt4 for all the good times we had together.
Farewell.

Change-Id: If0e81b71a97524bb0c84ea5bbcba4c29244a0a5e
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

tests/system/shared/classes.py

@@ -30,8 +30,6 @@
 
 import operator
 
-isQt4Build = False
-
 # for easier re-usage (because Python hasn't an enum type)
 class Targets:
     DESKTOP_474_GCC = 1
@@ -107,10 +105,7 @@ class ProjectSettings:
 
 # this class defines some constants for the views of the creator's MainWindow
 class ViewConstants:
-    if isQt4Build:
-        EDIT, DESIGN, DEBUG, PROJECTS, ANALYZE, HELP = range(6)
-    else:
-        WELCOME, EDIT, DESIGN, DEBUG, PROJECTS, ANALYZE, HELP = range(7)
+    WELCOME, EDIT, DESIGN, DEBUG, PROJECTS, ANALYZE, HELP = range(7)
     FIRST_AVAILABLE = 0
     # always adjust the following to the highest value of the available ViewConstants when adding new
     LAST_AVAILABLE = HELP
@@ -120,7 +115,7 @@ class ViewConstants:
     # if the provided argument does not match any of the ViewConstants it returns None
     @staticmethod
     def getToolTipForViewTab(viewTab):
-        if not isQt4Build and viewTab == ViewConstants.WELCOME:
+        if viewTab == ViewConstants.WELCOME:
             toolTip = ur'Switch to <b>Welcome</b> mode <span style="color: gray; font-size: small">(Ctrl\+|\u2303)%d</span>'
         elif viewTab == ViewConstants.EDIT:
             toolTip = ur'Switch to <b>Edit</b> mode <span style="color: gray; font-size: small">(Ctrl\+|\u2303)%d</span>'