Update .gitlab-ci.yml: moved the texlive installation into the dev container...

Update .gitlab-ci.yml: moved the texlive installation into the dev container to speed up the offline pipeline

.gitlab-ci.yml

@@ -269,8 +269,6 @@ test:offline:
     #- yum -y install texlive-base texlive-dvipng
     #- yum -y install texlive-latex texlive-latex-base-doc texlive-latex-fonts texlive-latex-bin texlive-latex-bin-bin
     #- yum -y install texlive-pictures texlive-pstricks texlive-pstricks-doc
-
-    - yum -y install texlive*
     
     # Get the necessary ROM data:
     - git clone https://git.ligo.org/alexander-pace/gstlal-testing-data.git ${GSTLAL_DIR}/gstlal-testing-data