docs: clean up homepage

mkdocs/docs/index.md

@@ -1,17 +1,3 @@
 # Welcome to the official iDigBio documentation!
 
 To learn more about iDigBio visit [idigbio.org](https://www.idigbio.org/).
-
-## Commands
-
-* `mkdocs new [dir-name]` - Create a new project.
-* `mkdocs serve` - Start the live-reloading docs server.
-* `mkdocs build` - Build the documentation site.
-* `mkdocs -h` - Print help message and exit.
-
-## Project layout
-
-    mkdocs.yml    # The configuration file.
-    docs/
-        index.md  # The documentation homepage.
-        ...       # Other markdown pages, images and other files.