removed the ibm post due to non-general topics

Author: BuildTools

README.md

@@ -584,15 +584,6 @@ _Note to readers: This list refers to some of the articles, posts, videos, tools
 
 </details>
 
-<details>
-  <summary>IBM</summary>
-
-### Blog Posts
-
-* [Three Differences Between DevOps and SRE](https://www.ibm.com/cloud/blog/three-differences-between-devops-and-sre)
-
-</details>
-
 <details>
   <summary>Indeed</summary>