Remove custom read-csv stuff

Author: phofl

.github/workflows/test.yaml

@@ -47,7 +47,7 @@ jobs:
           cache-environment-key: environment-${{ steps.date.outputs.date }}-1
 
       - name: Install current main versions of dask
-        run: python -m pip install git+https://github.com/dask/dask
+        run: python -m pip install git+https://github.com/phofl/dask@read-csv-legacy
         if: ${{ matrix.environment-file == 'ci/environment.yml' }}
 
       - name: Install current main versions of distributed

ci/environment.yml

@@ -13,4 +13,4 @@ dependencies:
   - xarray
   - pip:
       - git+https://github.com/dask/distributed
-      - git+https://github.com/phofl/dask@read-csv-legacy
+      - git+https://github.com/dask/dask