CI: removing the yml GitLab CI file (useless w/ our Jenkins pipelines)

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

.gitlab-ci.yml

-job1:
-  script:
-    - date
-    - pwd
-    - echo $OAI_TEST_CASE_GROUP
-    - echo $MACHINELIST
-    - echo $MACHINELISTGENERIC
-    - echo $RESULT_DIR
-    - echo $NRUNS_LTE_SOFTMODEM
-    - source oaienv
-    - rm -rf cmake_targets/autotests/log
-    - mkdir cmake_targets/autotests/log
-    - cd cmake_targets/autotests/v2
-    - python main.py
-    - date
-  only:
-    - triggers