Revert "Emit signal when animation ends by seek"
Revert "Emit signal when animation ends by seek"

This reverts commit bf1cc116e15ec155c1dfff06bd02d2f1dfc21ee0.

This needs more discussion to avoid breaking some users' expectations.
See #38086 for arguments.

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