[rootcling] Remove always false variable requestAllSymbols. NFC
[rootcling] Remove always false variable requestAllSymbols. NFC

karies/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,karies/root,root-mirror/root,olifre/root,olifre/root,karies/root,olifre/root,olifre/root,karies/root,root-mirror/root,karies/root,root-mirror/root,karies/root,olifre/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,root-mirror/root,karies/root