Remove runner tags, actually not needed

We rather rely on the Gitlab setting that prevents some runners from accepting
jobs without tags.

(cherry picked from commit 540e3c2c)

.gitlab-ci.yml

@@ -4,8 +4,6 @@ variables:
 
 build_binaries:
   stage: build
-  tags:
-    - dynare
   script:
     - autoreconf -si
     - './configure --with-matlab=$(dirname $(dirname $(readlink -f `which matlab`))) MATLAB_VERSION=$(echo version | matlab -nodesktop -nodisplay -nosplash 2>/dev/null | sed -En "/ans\ =/!d;n;n;s/^[^0-9]*([0-9]+\.[0-9]+).*$/\1/;p")'
@@ -20,8 +18,6 @@ build_binaries:
 
 build_doc:
   stage: build
-  tags:
-    - dynare
   script:
     - autoreconf -si
     - ./configure --disable-matlab --disable-octave
@@ -34,8 +30,6 @@ build_doc:
 
 testsuite_matlab:
   stage: test
-  tags:
-    - dynare
   script:
     - autoreconf -si
     - './configure --disable-octave --with-matlab=$(dirname $(dirname $(readlink -f `which matlab`))) MATLAB_VERSION=$(echo version | matlab -nodesktop -nodisplay -nosplash 2>/dev/null | sed -En "/ans\ =/!d;n;n;s/^[^0-9]*([0-9]+\.[0-9]+).*$/\1/;p")'
@@ -55,8 +49,6 @@ testsuite_matlab:
 
 .testsuite_octave_template:
   stage: test
-  tags:
-    - dynare
   variables:
     OPENBLAS_NUM_THREADS: 1
   script: