Removed Julia cache.

Author: MarijnJ0

.github/workflows/runtests.yml

@@ -32,9 +32,6 @@ jobs:
         with:
           version: '1.11'
 
-      - name: Cache Julia
-        uses: julia-actions/cache@v2
-
       # Run tests
       - name: Run test suite
         run: julia --project=. -e 'using Pkg; Pkg.instantiate(); Pkg.test()'