Fix paint tool duplicate shortcut
Fix paint tool duplicate shortcut

This pull request fixes an issue where the pain tool in tile_map_editor.cpp had two different shortcuts for the same tool.
akien-mga/godot,guilhermefelipecgs/godot,josempans/godot,sanikoyes/godot,vnen/godot,akien-mga/godot,Zylann/godot,Shockblast/godot,ZuBsPaCe/godot,DmitriySalnikov/godot,Faless/godot,godotengine/godot,vkbsb/godot,guilhermefelipecgs/godot,josempans/godot,Faless/godot,DmitriySalnikov/godot,sanikoyes/godot,Zylann/godot,guilhermefelipecgs/godot,Zylann/godot,pkowal1982/godot,firefly2442/godot,akien-mga/godot,ZuBsPaCe/godot,godotengine/godot,ZuBsPaCe/godot,Zylann/godot,Zylann/godot,ZuBsPaCe/godot,Valentactive/godot,guilhermefelipecgs/godot,firefly2442/godot,Valentactive/godot,DmitriySalnikov/godot,pkowal1982/godot,firefly2442/godot,ZuBsPaCe/godot,Shockblast/godot,vkbsb/godot,vnen/godot,akien-mga/godot,Shockblast/godot,Zylann/godot,vkbsb/godot,vkbsb/godot,DmitriySalnikov/godot,guilhermefelipecgs/godot,sanikoyes/godot,josempans/godot,firefly2442/godot,josempans/godot,BastiaanOlij/godot,firefly2442/godot,godotengine/godot,pkowal1982/godot,Faless/godot,josempans/godot,ZuBsPaCe/godot,godotengine/godot,BastiaanOlij/godot,Valentactive/godot,vnen/godot,Valentactive/godot,firefly2442/godot,vnen/godot,Shockblast/godot,akien-mga/godot,Faless/godot,Shockblast/godot,BastiaanOlij/godot,Faless/godot,akien-mga/godot,vnen/godot,akien-mga/godot,Faless/godot,vkbsb/godot,pkowal1982/godot,akien-mga/godot,pkowal1982/godot,sanikoyes/godot,Zylann/godot,BastiaanOlij/godot,Zylann/godot,Shockblast/godot,godotengine/godot,BastiaanOlij/godot,vnen/godot,vnen/godot,ZuBsPaCe/godot,guilhermefelipecgs/godot,vkbsb/godot,vkbsb/godot,sanikoyes/godot,Valentactive/godot,godotengine/godot,ZuBsPaCe/godot,sanikoyes/godot,Valentactive/godot,josempans/godot,Valentactive/godot,Shockblast/godot,BastiaanOlij/godot,Faless/godot,Shockblast/godot,pkowal1982/godot,DmitriySalnikov/godot,Valentactive/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,josempans/godot,vkbsb/godot,pkowal1982/godot,BastiaanOlij/godot,pkowal1982/godot,godotengine/godot,firefly2442/godot,sanikoyes/godot,DmitriySalnikov/godot,sanikoyes/godot,firefly2442/godot,vnen/godot,godotengine/godot,DmitriySalnikov/godot,josempans/godot,BastiaanOlij/godot,Faless/godot