good style of uninstalling
How it will be better:
CreateDirectory "$SMPROGRAMS\Alykel"
CreateShortCut "$SMPROGRAMS\Alykel\..."
and then
RMDir /r "$INSTDIR"
RMDir /r "$SMPROGRAMS\Alykel"
or :
Delete "$INSTDIR\.."
Delete "$INSTDIR\.."
RMDir "$INSTDIR"
SetShellVarContext all
Delete "$SMPROGRAMS\Alykel\.."
Delete "$SMPROGRAMS\Alykel\.."
RMDir "$SMPROGRAMS\Alykel"
Something says me that second example will be more correct ;-)