remove old unused code

move to esm

dist/easings/easings.d.ts

@@ -0,0 +1,10 @@
+type EasingCollection = {
+    out: any;
+    in: any;
+    inOut: any;
+};
+type EasingFunction = (duration: number, delay?: number) => EasingCollection;
+declare const Easings: {
+    [key: string]: EasingFunction;
+};
+export default Easings;