Merge pull request #11310 from Djelibeybi/remove-oraclelinux6

[oraclelinux] remove Oracle Linux 6 images

library/oraclelinux

@@ -25,10 +25,3 @@ Tags: 7-slim
 Architectures: amd64, arm64v8
 Directory: 7-slim
 
-Tags: 6.10, 6
-Architectures: amd64
-Directory: 6
-
-Tags: 6-slim
-Architectures: amd64
-Directory: 6-slim