Disable Code Climate
Disable Code Climate

This pull request disables Code Climate because of:

* Code Climate was enabled at #1057 to run RuboCop
* RuboCop is running using GitHub Actions by #1925 now
* We are not making use of other Code Climate features
* I prefer not to run a lot of jobs at CI

Thanks to Code Climate for providing great services so far.

yahonda/oracle-enhanced,yahonda/oracle-enhanced,rshell/oracle-enhanced,rshell/oracle-enhanced,rsim/oracle-enhanced,rsim/oracle-enhanced