Doc: Remove info about Qt Quick Designer plugin from Qt Creator Manual

Fixes: QTCREATORBUG-26321
Change-Id: I8738cbdc56d6469a4d133b17741871787e0cba9f
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

doc/qtcreator/src/user-interface/creator-file-system-view.qdoc

@@ -33,6 +33,7 @@
     If you cannot see a file in the \l Projects view, switch to the
     \uicontrol {File System} view, which shows all the files in the file system.
 
+    \if defined(qtdesignstudio)
     The following image displays the \uicontrol {File System} view in the
     \uicontrol Design mode:
 
@@ -89,6 +90,7 @@
     \endlist
 
     \section1 File System View in Sidebar
+    \endif
 
     In the \uicontrol Edit and \uicontrol Debug mode, the
     \uicontrol {File System} view is displayed in the \l{Working with Sidebars}

doc/qtcreator/src/user-interface/creator-open-documents-view.qdoc

@@ -35,8 +35,13 @@
     \image qtcreator-open-documents-view.png "Open Documents view"
 
     You can use the context menu to apply some of the functions also available
-    in the \uicontrol File menu and in the \l {File System Context Menu}
-    {File System} view to the file that is selected in the view.
+    in the \uicontrol File menu
+    \if defined(qtcreator)
+    .
+    \else
+    and in the \l {File System Context Menu} {File System} view to the file
+    that is selected in the view.
+    \endif
 
     In addition, you can:
 

doc/qtcreator/src/user-interface/creator-projects-view.qdoc

@@ -40,6 +40,7 @@
     the build system structure of the project and lists all files that
     are part of the project.
 
+    \if defined(qtdesignstudio)
     The following image displays the \uicontrol Projects view in the
     \uicontrol Design mode:
 
@@ -65,14 +66,6 @@
             configuration files.
     \endlist
 
-    \if defined(qtcreator)
-    Files that are not sources or data can be still included into a project's
-    distribution tarball by adding their paths to the \c DISTFILES variable in
-    the .pro file. This way they also become known to \QC, so that they are
-    visible in the \uicontrol Projects view and are known to the locator and
-    search.
-    \endif
-
     \section1 Projects View Context Menu
 
     The \uicontrol Projects view contains context menus for managing projects,
@@ -114,6 +107,7 @@
     the \l {File System} view.
 
     \section1 Projects View in Sidebar
+    \endif
 
     In the \uicontrol Edit and \uicontrol Debug mode, the \uicontrol Projects
     view is displayed in the \l{Working with Sidebars}{sidebar}. It has a

doc/qtcreator/src/user-interface/creator-ui.qdoc

@@ -292,11 +292,6 @@
     \uicontrol View > \uicontrol {Mode Selector Style} > \uicontrol Hidden.
     To only show icons on the mode selector, select the \uicontrol {Icons Only}
     style.
-
-    The following image displays an example application in \uicontrol Edit mode (1)
-    and \uicontrol Design mode (2).
-
-    \image qtcreator-qt-quick-editors.png "Edit mode and Design mode"
     \endif
 
     You can use \QC in the following modes:

doc/qtcreator/src/user-interface/creator-views.qdoc

@@ -70,10 +70,10 @@
             files are included in the current file and which files include
             the current file.
     \endlist
-    \endif
-
+    \else
     For more information about views that are only available when editing QML
-    files in the Design mode, see \l{Design Views}.
+    files in the \uicontrol Design mode, see \l{Design Views}.
+    \endif
 
     The additional options in a particular view are described in the following
     sections.