Doc: update the process of connecting iOS devices

Make one step a note, so that it will not confuse
readers and remove an obsolete step.

Task-number: QTCREATORBUG-10648
Change-Id: I46aa86d8c5c924e367e7bc89682e6726bc0c4eae
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

doc/src/ios/creator-ios-dev.qdoc

@@ -85,9 +85,9 @@
         \gui iOS, and deselect the
         \gui {Ask about devices not in developer mode} check box.
 
-        \li Select \gui {Qt Creator} > \gui {About Plugins} >
-            \gui {Device Support} > \gui iOS to enable the iOS plugin.
-            Restart \QC to be able to use the plugin.
+        \note If \QC does not detect the devices, the iOS plugin might not be
+        enabled. Select \gui {Qt Creator} > \gui {About Plugins} >
+        \gui {Device Support} > \gui iOS and restart \QC.
 
         \li To specify build settings:
 
@@ -101,10 +101,6 @@
 
                 \image qtcreator-ios-add-kit.png "Build & Run Settings"
 
-            \li Check that the \gui {iOS build} field contains the build
-                commands for an Xcode build. To add an Xcode build step, select
-                \gui {Add Build Step} > \gui xcodebuild.
-
         \endlist
 
         \li Select \gui Run to specify run settings.