fdo#83558 Don't change toolbar tooltip on state change

Also removed EraseAllMnemonicChars since that method is called later by SetItemText

Change-Id: I10139d437290ccfed6a8a15e8e5ce501e15c2560
Reviewed-on: https://gerrit.libreoffice.org/11306Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>

framework/source/uielement/generictoolbarcontroller.cxx

@@ -243,9 +243,7 @@ throw ( RuntimeException, std::exception )
                     aTmp += aStrValue.copy( 4 );
                     aStrValue = aTmp;
                 }
-                OUString aText( MnemonicGenerator::EraseAllMnemonicChars( aStrValue ) );
-                m_pToolbar->SetItemText( m_nID, aText );
-                m_pToolbar->SetQuickHelpText( m_nID, aText );
+                m_pToolbar->SetItemText( m_nID, aStrValue );
             }
 
             if ( m_bMadeInvisible )