Remove reset schema.rb

The schema.rb is in the .gitignore for a long time now, so this isn't
needed anymore.

diaspora/install.sls

@@ -87,13 +87,6 @@ diaspora_install_directory:
     - require:
       - user: diaspora_user
 
-diaspora_reset_schema.rb:
-  cmd.run:
-    - name: git checkout db/schema.rb
-    - runas: {{ diaspora.user.username }}
-    - cwd: {{ diaspora.install_path }}
-    - onlyif: git ls-files --error-unmatch db/schema.rb && git rev-parse && ! git diff --name-only --exit-code db/schema.rb
-
 diaspora_git:
   git.latest:
     - name: {{ diaspora.repository }}
@@ -103,7 +96,6 @@ diaspora_git:
     - force_fetch: True
     - require:
       - file: diaspora_install_directory
-      - cmd: diaspora_reset_schema.rb
     - require_in:
       - file: {{ diaspora.install_path }}/config/database.yml