remove unused strings
remove unused strings

tobiasge/cgeo,matej116/cgeo,cgeo/cgeo,cgeo/cgeo,S-Bartfast/cgeo,matej116/cgeo,S-Bartfast/cgeo,rsudev/c-geo-opensource,rsudev/c-geo-opensource,tobiasge/cgeo,tobiasge/cgeo,auricgoldfinger/cgeo,auricgoldfinger/cgeo,auricgoldfinger/cgeo,cgeo/cgeo,S-Bartfast/cgeo,rsudev/c-geo-opensource,cgeo/cgeo,matej116/cgeo