How to suppress these “Application needs installed” notifications from Google Maps? Since the last Google Maps update, it periodically shows an “Application needs installed: Request of install from Google Maps” airpush notification begging me to install Google Play services.

I do not want it installed, since i do not have enough disk space on my phone, and Maps seem to function normally (aside from the usual graphics glitches) without Play Services installed. I do not use other Google apps aside from Maps.

How to get rid of these notifications?

If relevant, i am using Android 4.1.2 (Cyanogenmod unofficial) on Sony Arc S.
The only way possible is to root your phone and install Xposed Framework.
It has a module, This App Will Run Without Google Play Services, which makes Play Services installation not compulsory for certain apps (including Maps); it's compatible with Android 2.3 – 5.0.