No longer allow test failures on Octave and MATLAB R2009b

All issues are now fixed, and we want to detect regressions early.

.gitlab-ci.yml

@@ -16,7 +16,6 @@ testsuite_old_matlab:
     MATLAB: /usr/local/MATLAB/R2009b/bin/matlab
   script:
     - make check-matlab
-  allow_failure: true
 
 testsuite_octave:
   stage: test
@@ -24,4 +23,3 @@ testsuite_octave:
     OPENBLAS_NUM_THREADS: 1
   script:
     - make check-octave
-  allow_failure: true