Remove waterfall CI trigger (#7519)

* fix (CI): fix the triggered project name

* fix (CI): debug run

* fix (CI): debug run 2

* fix (CI): revert debug2

* Revert "fix (CI): debug run"

This reverts commit 96866a953da797ef6e0689374eecc0d8cba4627d.

* CI: remove the trigger

substrate/.gitlab-ci.yml

@@ -24,7 +24,6 @@ stages:
   - check
   - test
   - build
-  - post-build-test
   - chaos-env
   - chaos
   - publish
@@ -491,24 +490,6 @@ build-rust-doc:
     - echo "<meta http-equiv=refresh content=0;url=sc_service/index.html>" > ./crate-docs/index.html
     - sccache -s
 
-#### stage:                        post-build-test
-
-trigger-contracts-ci:
-  stage:                           post-build-test
-  needs:
-    - job:                         build-linux-substrate
-      artifacts:                   false
-    - job:                         test-linux-stable
-      artifacts:                   false
-  trigger:
-    project:                       parity/srml-contracts-waterfall
-    branch:                        master
-    strategy:                      depend
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "web"
-    - if: $CI_PIPELINE_SOURCE == "schedule"
-    - if: $CI_COMMIT_REF_NAME == "master"
-
 #### stage:                        chaos-env
 
 build-chaos-docker: