remove $5 campaign

README.md

@@ -1,8 +1,3 @@
-## $5 Tech Unlocked 2021!
-[Buy and download this Book for only $5 on PacktPub.com](https://www.packtpub.com/product/hands-on-reactive-programming-in-spring-5/9781787284951)
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-*If you have read this book, please leave a review on [Amazon.com](https://www.amazon.com/gp/product/1787284956). Potential readers can then use your unbiased opinion to help them make purchase decisions. Thank you. The $5 campaign runs from __December 15th 2020__ to __January 13th 2021.__*
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 # Hands-On Reactive Programming in Spring 5
 
 <a href="https://www.packtpub.com/application-development/hands-reactive-programming-spring-5"><img src="https://github.com/PacktPublishing/Hands-On-Reactive-Programming-in-Spring-5/blob/master/doc/img/book-title.png" alt="Hands-On Reactive Programming in Spring 5" height="256px" align="right"></a>