fix: removed unused ffvar

Author: rcaferati

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-really-awesome-button",
-  "version": "2.0.1",
+  "version": "2.0.2",
   "description": "React Native Button UI component that renders an 60fps animated set of progress enabled 3D performant buttons.",
   "main": "lib/commonjs/index",
   "module": "lib/module/index",

src/Button.tsx

@@ -79,7 +79,6 @@ export type ButtonTypes = {
   textColor?: string;
   textLineHeight?: number;
   textSize?: number;
-  textFamily?: string;
   width?: number | null;
   children?: string | ReactNode;
   onPress?: (callback?: () => void) => void;