modem/msm-modem: Fix uim-selection service dependencies

To hide (theoretical) up to 1min delay, uim-selection had after * dependency.

It appears that if some other package depends on some service we have in before (e.g. urfkill has after ofono), the start ordering may be incorrect. (Seems like I was unlucky to not hit this issue while initially testing uim-selection)

This commit drops after * to make sure script runs properly. Another solution would be to make sure every other service that may depend on ofono/mm is included in depends here but I believe it will be much harder to maintain.