Removed MR template (because it needs to be in master)

.gitlab/merge_request_templates/General.md

-Insert a meaningful description for this merge request here.  What is the
-new/changed behavior?  Which bug was fixed?
-
----
-
-Add the text above this line to the git comment.
-
-# Check list for the author #
-
-- [ ] All tests pass. (style, unit/integration, static code analysis)
-- [ ] What is the main focus for the reviewer?  What is the core intent of this
-      MR?
-- [ ] How to set up a test environment.
-- [ ] Annotations in code (Gitlab comments)
-  - Intent of new code
-  - Problems with old code
-  - Why this implementation?
-
-# Check list for the reviewer #
-
-- [ ] Tests pass
-- [ ] Do I understand the intent of this MR?
-- [ ] Does the test environment setup work?
-- [ ] Is the intended behavior reproducible in the test environment?
-- [ ] Code overview: Which functions/classes are relevant for understanding the MR?
-- [ ] Work through the open comment threads.
-- [ ] Are the doc strings / comments up-to-date?  Or have there been behavioral
-  changes without amending the documentation?
-- [ ] Are there spezifications? Are they satisfied?