Remove LLVM 8 source build.

maleadt · maleadt · commit d333ec7b8a69 · 2020-01-22T09:05:06.000+01:00
Nightlies use LLVM 8 nowadays.
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
@@ -34,13 +34,6 @@ test:nightly:
 
 # special tests
 
-test:source:llvm8:
-  extends:
-    - .julia:source
-    - .test
-  variables:
-    CI_BUILD_ARGS: 'LLVM_VER=8.0.0 USE_BINARYBUILDER_LLVM=0'
-
 test:source:llvm9:
   extends:
     - .julia:source
