Remove gitlab ci

.gitlab-ci.yml

@@ -1,17 +0,0 @@
-image: golang:latest
-
-stages:
-  - fuzz
-
-include:
-  - template: Coverage-Fuzzing.gitlab-ci.yml
-
-multiplex_fuzz:
-  extends: .fuzz_base
-  image: registry.gitlab.com/gitlab-org/security-products/analyzers/gitlab-cov-fuzz/golang:1.12-buster-llvm9
-  script:
-    - pushd internal/multiplex
-    - go-fuzz-build -libfuzzer -o multiplex_fuzz.a .
-    - clang -fsanitize=fuzzer multiplex_fuzz.a -o multiplex_fuzz
-    - popd
-    - ./gitlab-cov-fuzz run --regression=$REGRESSION -- ./internal/multiplex/multiplex_fuzz