Squish: Update expected tree after removing WebEngine

Change-Id: I097dce55361027acc459070ac750610ec80fa6c9
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

tests/system/README

@@ -28,7 +28,11 @@ Second - some of the test suites/test cases expect a build of Qt 4.8.7 to be ava
 Third - some of the test suites/test cases expect Qt versions to be installed in their default
 locations. On Linux/macOS this is ~/Qt5.x.1 and on Windows this is C:\Qt\Qt5.x.1. It's easiest to
 use installations of the official opensource Qt packages. Just install the Qt version for the
-respective toolchain and if possible the additional module Qt Script. Do not install Qt WebEngine.
+respective toolchain with the components (if available):
+- (Desktop) <toolchain> <bitness>, e.g. Desktop gcc 64-bit
+- Qt Quick Controls
+- Qt Script
+
 The exact versions and toolchains are:
 
 Linux:

tests/system/suite_general/tst_openqt_creator/testdata/projecttree_creator.tsv

@@ -7306,7 +7306,6 @@
 "searchtaskhandler.h"	"4"
 "searchwidget.h"	"4"
 "textbrowserhelpviewer.h"	"4"
-"webenginehelpviewer.h"	"4"
 "xbelsupport.h"	"4"
 "Sources"	"3"
 "centralwidget.cpp"	"4"
@@ -7328,7 +7327,6 @@
 "searchtaskhandler.cpp"	"4"
 "searchwidget.cpp"	"4"
 "textbrowserhelpviewer.cpp"	"4"
-"webenginehelpviewer.cpp"	"4"
 "xbelsupport.cpp"	"4"
 "Forms"	"3"
 "docsettingspage.ui"	"4"