Revert support level to Java 7
Revert support level to Java 7

#65

PTAL @broady
sumit784/google-maps-services-java,PsyGik/google-maps-services-java,etki/google-maps-services-java,domesticmouse/google-maps-services-java,edwardsamuel/google-maps-services-java,GabrielApG/google-maps-services-java,markmcd/google-maps-services-java,luyuncheng/google-maps-services-java,cmontezano/google-maps-services-java,shelsonjava/google-maps-services-java,googlemaps/google-maps-services-java,Testoni/google-maps-services-java,thesmith/google-maps-services-java,mreichelt/google-maps-services-java,Katarzynasrom/google-maps-services-java