Remove foreach snippets from the documentation

We don't recommend foreach anymore, and have in fact
adapted two snippets already to use for(), but missed
the documentation text.

In any case, it feels a bit weird to give an example
how to iterate over QStringList in each of these methods,
so we might as well just remove this part.

Change-Id: If8744e48961661ad518f5f24781c38f371d981bc
Reviewed-by: Jaishree Vyas <jaishree.vyas@qt.io>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
(cherry picked from commit 3b9f6b54b1cda08079ae97956478a4af55133803)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit fef7baaf119f64f63cca542c72a7a80f91917dd7)

src/corelib/doc/snippets/code/src_corelib_kernel_qcoreapplication.cpp

@@ -13,12 +13,6 @@ connect(quitButton, &QPushButton::clicked, &app, &QCoreApplication::quit, Qt::Qu
 //! [1]
 
 
-//! [2]
-foreach (const QString &path, app.libraryPaths())
-    do_something(path);
-//! [2]
-
-
 //! [3]
 // Called once QCoreApplication exists
 static void preRoutineMyDebugTool()

src/corelib/kernel/qcoreapplication.cpp

@@ -2965,11 +2965,6 @@ Q_GLOBAL_STATIC(QRecursiveMutex, libraryPathMutex)
     directory (and its existence) may change when the directory of
     the application executable becomes known.
 
-    If you want to iterate over the list, you can use the \l foreach
-    pseudo-keyword:
-
-    \snippet code/src_corelib_kernel_qcoreapplication.cpp 2
-
     \sa setLibraryPaths(), addLibraryPath(), removeLibraryPath(), QLibrary,
         {How to Create Qt Plugins}
 */

src/gui/doc/snippets/code/src_gui_kernel_qguiapplication.cpp

@@ -74,26 +74,4 @@ appname -session id
 
 */ // wrap snippet 2
 
-
-void wrapper0() {
-
-
-//! [3]
-const QStringList commands = mySession.restartCommand();
-for (const QString &command : commands)
-    do_something(command);
-//! [3]
-
-} // wrapper0
-
-
-void wrapper1() {
-//! [4]
-const QStringList commands = mySession.discardCommand();
-for (const QString &command : mySession.discardCommand())
-    do_something(command);
-//! [4]
-
-
-} // wrapper1
 } // src_gui_kernel_qguiapplication

src/gui/kernel/qsessionmanager.cpp

@@ -281,10 +281,6 @@ void QSessionManager::setRestartCommand(const QStringList &command)
 /*!
     Returns the currently set restart command.
 
-    To iterate over the list, you can use the \l foreach pseudo-keyword:
-
-    \snippet code/src_gui_kernel_qguiapplication.cpp 3
-
     \sa setRestartCommand(), restartHint()
 */
 QStringList QSessionManager::restartCommand() const
@@ -307,10 +303,6 @@ void QSessionManager::setDiscardCommand(const QStringList &command)
 /*!
     Returns the currently set discard command.
 
-    To iterate over the list, you can use the \l foreach pseudo-keyword:
-
-    \snippet code/src_gui_kernel_qguiapplication.cpp 4
-
     \sa setDiscardCommand(), restartCommand(), setRestartCommand()
 */
 QStringList QSessionManager::discardCommand() const