Update README.md

Author: justkawal

README.md

@@ -27,10 +27,6 @@
 
 ### [Excel](https://www.pub.dev/packages/excel) is a flutter and dart library for reading, creating and updating excel-sheets for XLSX files.
 
-### Your Donations will help alot, Thank you!! ❤️❤️
-- [Ko-fi](http://ko-fi.com/kawal)
-- [PayPal](https://paypal.me/justkawal)
-
 ## Road-map:
  - ➕ Formulas and Calculations
  - 💾 Support Multiple Data type efficiently