Revert "tdf#41202 allow decrease selection with shift-click in writer"

Reverted as suggested in https://bugs.documentfoundation.org/show_bug.cgi?id=123582#c4

This reverts commit 31ba2a6bdecb81545d9b871a1a9394e5d7a3f2c4.

Change-Id: I574bacd227bdd6b0364251b060327a3e5f820965
Reviewed-on: https://gerrit.libreoffice.org/69132
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
diff --git a/sw/source/uibase/docvw/edtwin.cxx b/sw/source/uibase/docvw/edtwin.cxx
index 6ee65c5..846ffa6 100644
--- a/sw/source/uibase/docvw/edtwin.cxx
+++ b/sw/source/uibase/docvw/edtwin.cxx
@@ -3656,9 +3656,11 @@ void SwEditWin::MouseButtonDown(const MouseEvent& _rMEvt)
                if( !bOverSelect )
                    bOverURLGrf = bOverSelect = nullptr != rSh.IsURLGrfAtPos( aDocPos );

                MoveCursor( rSh, aDocPos, bOnlyText, bLockView );
                bCallBase = false;

                if ( !bOverSelect )
                {
                    MoveCursor( rSh, aDocPos, bOnlyText, bLockView );
                    bCallBase = false;
                }
                if (!bOverURLGrf && !bExecDrawTextLink && !bOnlyText)
                {
                    const SelectionType nSelType = rSh.GetSelectionType();