Revert "AnimComposer: return AnimLayer on the makeLayer and removeLayer methods."#2378

yaRnMcDonuts merged 2 commits intomasterjMonkeyEngine/jmonkeyengine:masterfrom

revert-2231-capdevon-AnimComposerjMonkeyEngine/jmonkeyengine:revert-2231-capdevon-AnimComposerCopy head branch name to clipboard