Remove docs building test for OSX

The docs building test also builds on Linux,
and doing this also on OSX is unnecessary.
Building LaTeX should be the same on both
platforms. Running on both was unnecessary.

.github/workflows/osx.yml

@@ -98,30 +98,6 @@ jobs:
       run: make
     - name: make check
       run: make check
-
-  build_osx_autotools_docs:
-    runs-on: macos-latest
-    steps:
-    - uses: actions/checkout@v2
-    # Brew may not have permission to install its packages
-    - name: change brew install folder permissions
-      run: sudo chmod -R a+rwx /usr/local/share/ || mkdir -p /usr/local/share/ -m a+rwx
-    - name: install maxtex
-      run: brew install --cask mactex
-    - name: install doc programs
-      run: brew install texi2html doxygen
-    - name: install automake
-      run: brew install automake
-    - name: install pkg-config
-      run: brew install pkgconfig
-    - name: create configure
-      run: autoreconf -i
-    - name: configure
-      run: ./configure
-    - name: make docs
-      run: make doc/check_html
-    - name: make doxygen 
-      run: make doc/doxygen
 
   build_osx_autotools_example:
     runs-on: macos-latest