Removed redundent workflow

.github/workflows/doc_build.yml

-name: Doc-Build
-
-on:
-  pull_request:
-    branches:
-      - main
-  push:
-    branches:
-      - main
-
-jobs:
-  Build-Docs:
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash -el {0}
-    steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
-        with:
-          submodules: true
-          fetch-depth: 0
-      - uses: conda-incubator/setup-miniconda@3b0f2504dd76ef23b6d31f291f4913fb60ab5ff3
-        with:
-          miniconda-version: "latest"
-          activate-environment: usgscsm
-          environment-file: doc_environment.yml
-          auto-activate-base: false
-          auto-update-conda: true
-
-      - name: Check doc build environment
-        run: |
-          conda list
-
-      - name: Build Docs
-        run: |
-          cd docs
-          doxygen Doxyfile.in
-          sphinx-build -b html source public