tools/pr_check: add REMOVEME in keyword filtered
tools/pr_check: add REMOVEME in keyword filtered

jasonatran/RIOT,RIOT-OS/RIOT,toonst/RIOT,OlegHahm/RIOT,kaspar030/RIOT,kaspar030/RIOT,kaspar030/RIOT,kaspar030/RIOT,kYc0o/RIOT,OlegHahm/RIOT,x3ro/RIOT,kYc0o/RIOT,x3ro/RIOT,jasonatran/RIOT,aeneby/RIOT,kaspar030/RIOT,miri64/RIOT,authmillenon/RIOT,josephnoir/RIOT,kYc0o/RIOT,smlng/RIOT,basilfx/RIOT,yogo1212/RIOT,ant9000/RIOT,josephnoir/RIOT,toonst/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,josephnoir/RIOT,josephnoir/RIOT,smlng/RIOT,mtausig/RIOT,yogo1212/RIOT,miri64/RIOT,miri64/RIOT,jasonatran/RIOT,kYc0o/RIOT,x3ro/RIOT,mtausig/RIOT,toonst/RIOT,smlng/RIOT,mtausig/RIOT,authmillenon/RIOT,miri64/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,toonst/RIOT,OTAkeys/RIOT,jasonatran/RIOT,basilfx/RIOT,RIOT-OS/RIOT,miri64/RIOT,x3ro/RIOT,smlng/RIOT,OTAkeys/RIOT,yogo1212/RIOT,aeneby/RIOT,yogo1212/RIOT,basilfx/RIOT,RIOT-OS/RIOT,mtausig/RIOT,OlegHahm/RIOT,ant9000/RIOT,ant9000/RIOT,smlng/RIOT,toonst/RIOT,kYc0o/RIOT,OlegHahm/RIOT,jasonatran/RIOT,ant9000/RIOT,aeneby/RIOT,authmillenon/RIOT,aeneby/RIOT,josephnoir/RIOT,mtausig/RIOT,yogo1212/RIOT,authmillenon/RIOT,x3ro/RIOT,basilfx/RIOT,authmillenon/RIOT,ant9000/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,yogo1212/RIOT,basilfx/RIOT,aeneby/RIOT,OTAkeys/RIOT