NodePath: Remove unimplemented `get_parent()` method
NodePath: Remove unimplemented `get_parent()` method

Fixes #48100.

firefly2442/godot,Valentactive/godot,BastiaanOlij/godot,Zylann/godot,DmitriySalnikov/godot,pkowal1982/godot,Valentactive/godot,guilhermefelipecgs/godot,akien-mga/godot,josempans/godot,BastiaanOlij/godot,vnen/godot,pkowal1982/godot,honix/godot,josempans/godot,vkbsb/godot,pkowal1982/godot,akien-mga/godot,vnen/godot,Shockblast/godot,BastiaanOlij/godot,Shockblast/godot,Shockblast/godot,Faless/godot,pkowal1982/godot,sanikoyes/godot,akien-mga/godot,akien-mga/godot,Zylann/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,Faless/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,honix/godot,akien-mga/godot,ZuBsPaCe/godot,MarianoGnu/godot,Valentactive/godot,firefly2442/godot,vnen/godot,sanikoyes/godot,Zylann/godot,josempans/godot,honix/godot,godotengine/godot,pkowal1982/godot,akien-mga/godot,vkbsb/godot,Zylann/godot,guilhermefelipecgs/godot,Shockblast/godot,vkbsb/godot,DmitriySalnikov/godot,guilhermefelipecgs/godot,godotengine/godot,Faless/godot,vkbsb/godot,honix/godot,josempans/godot,Zylann/godot,godotengine/godot,DmitriySalnikov/godot,BastiaanOlij/godot,sanikoyes/godot,firefly2442/godot,ZuBsPaCe/godot,Valentactive/godot,ZuBsPaCe/godot,godotengine/godot,guilhermefelipecgs/godot,josempans/godot,honix/godot,vnen/godot,guilhermefelipecgs/godot,Valentactive/godot,akien-mga/godot,vnen/godot,vnen/godot,sanikoyes/godot,firefly2442/godot,ZuBsPaCe/godot,MarianoGnu/godot,BastiaanOlij/godot,vkbsb/godot,DmitriySalnikov/godot,Faless/godot,Faless/godot,josempans/godot,Zylann/godot,Faless/godot,sanikoyes/godot,vkbsb/godot,BastiaanOlij/godot,ZuBsPaCe/godot,Shockblast/godot,godotengine/godot,Valentactive/godot,ZuBsPaCe/godot,sanikoyes/godot,vnen/godot,DmitriySalnikov/godot,MarianoGnu/godot,MarianoGnu/godot,godotengine/godot,Faless/godot,BastiaanOlij/godot,Zylann/godot,firefly2442/godot,guilhermefelipecgs/godot,sanikoyes/godot,Shockblast/godot,firefly2442/godot,akien-mga/godot,pkowal1982/godot,pkowal1982/godot,vnen/godot,Faless/godot,BastiaanOlij/godot,firefly2442/godot,MarianoGnu/godot,MarianoGnu/godot,Shockblast/godot,Valentactive/godot,Zylann/godot,godotengine/godot,josempans/godot,vkbsb/godot,honix/godot,vkbsb/godot,Valentactive/godot,godotengine/godot,sanikoyes/godot,josempans/godot,Shockblast/godot,ZuBsPaCe/godot,MarianoGnu/godot,firefly2442/godot,DmitriySalnikov/godot,pkowal1982/godot,MarianoGnu/godot