don't install nightlies

.github/workflows/ci.yml

@@ -19,10 +19,7 @@ jobs:
           python-version: "3.10"
       - name: Install build and test dependencies
         run: |
-          python -m pip install -U pip build pytest unyt wheel meson ninja meson-python patchelf
-          pip uninstall -y numpy
-          pip install -i https://pypi.anaconda.org/scientific-python-nightly-wheels/simple numpy
-          pip install --no-deps -i https://pypi.anaconda.org/scientific-python-nightly-wheels/simple pandas
+          python -m pip install -U pip build pytest unyt wheel meson ninja meson-python patchelf pandas numpy
       - name: Install asciidtype
         working-directory: asciidtype
         run: |