Remove tags from all builds

.gitlab-ci.yml

@@ -13,8 +13,6 @@ stages:
 
 build:main:
   stage: build
-  tags:
-    - demeter
   script:
     - CMAKE_FLAGS="-DDUNE_PYTHON_VIRTUALENV_SETUP=True -DDUNE_PYTHON_ALLOW_GET_PIP=True" MAKE_FLAGS="-j 2" ./dune-common/bin/dunecontrol --only=dorie all
   artifacts:
@@ -25,8 +23,6 @@ build:main:
 
 build:update_dune:
   stage: build
-  tags:
-    - demeter
   only:
     - master
   script:
@@ -41,15 +37,11 @@ build:update_dune:
 
 build:debug:
   stage: build
-  tags:
-    - demeter
   script:
     - CMAKE_FLAGS="-DCMAKE_BUILD_TYPE=Debug -DDUNE_PYTHON_VIRTUALENV_SETUP=True -DDUNE_PYTHON_ALLOW_GET_PIP=True" MAKE_FLAGS="-j 2" ./dune-common/bin/dunecontrol --only=dorie all
 
 test:main:
   stage: test
-  tags:
-    - demeter
   dependencies:
     - build:main
   allow_failure: true
@@ -64,8 +56,6 @@ test:main:
 
 test:update_dune:
   stage: test
-  tags:
-    - demeter
   dependencies:
     - build:update_dune
   only:
@@ -82,8 +72,6 @@ test:update_dune:
 
 deploy:build_docs:
   stage: deploy
-  tags:
-    - demeter
   dependencies:
     - build:main
   script: