CI: remove uninstall of nomkl (pandas-dev#60150)

Author: jorisvandenbossche

.github/actions/build_pandas/action.yml

@@ -22,13 +22,6 @@ runs:
         fi
       shell: bash -el {0}
 
-    - name: Uninstall nomkl
-      run: |
-        if conda list nomkl | grep nomkl 1>/dev/null; then
-          conda remove nomkl -y
-        fi
-      shell: bash -el {0}
-
     - name: Build Pandas
       run: |
         if [[ ${{ inputs.editable }} == "true" ]]; then