Removing spring repos from pom (#2481)

- These are being deprecated
- Causes build issues when .m2 does not have this cached already

pom.xml

@@ -950,14 +950,6 @@
       <id>confluent</id>
       <url>https://packages.confluent.io/maven/</url>
     </repository>
-    <repository>
-      <id>libs-milestone</id>
-      <url>https://repo.spring.io/libs-milestone/</url>
-    </repository>
-    <repository>
-      <id>libs-release</id>
-      <url>https://repo.spring.io/libs-release/</url>
-    </repository>
   </repositories>
 
   <profiles>