Drop HTML/CSS/JS checks from the delivery pipeline

Too much infrastructure for something I haven't touched in a while.
Anyway, the difficulty of running these tools manually is dwarfed
by the difficulty of testing (non-trivial) changes in Web browsers.

.travis.yml

@@ -2,11 +2,6 @@ language: python
 dist: xenial
 sudo: false
 
-addons:
-    apt:
-        packages:
-            - xmlstarlet
-
 matrix:
     include:
         - python: "3.4"
@@ -26,8 +21,6 @@ install:
     - if [ "$REQUIRES" = minimum ]; then tools/minimum_requires.sh; fi
     - pip install -e .
     - pip install -r tools/requirements.txt
-    - tools/vnu.sh install
-    - tools/eslint.sh install
 
 cache: pip
 
@@ -41,14 +34,10 @@ script:
     - pytest
 
     # Although the main docs (``doc/``) are processed by Read the Docs,
-    # we want to check that they are building OK, and validate the resulting
-    # HTML report. But first, make sure that the included API example works.
+    # we want to check that they are building OK.
+    # Also, make sure that the included API example works.
     - python doc/api_example.py && grep -q 1194 report.html
     - sphinx-build -W doc/ doc/_build/
-    - tools/vnu.sh run doc/_build/showcase.html
-    - tools/vnu.sh run doc/_build/notices.html
-    - tools/css_validator.sh httpolice/reports/html.css
-    - tools/eslint.sh run httpolice/reports/html.js
 
     # Check the assorted reStructuredText documents at the top of the repo.
     - tools/check_rst.sh

HACKING.rst

@@ -240,11 +240,6 @@ Maintenance
 
        $ pip-compile --upgrade tools/requirements.in
 
-  #. Update other pinned versions:
-
-     - Nu Html Checker (in ``tools/vnu.sh``);
-     - ESLint (in ``tools/eslint.sh``).
-
   #. Check that everything is OK with the new versions.
      Maybe some Pylint overrides are no longer necessary, etc.
 

MANIFEST.in

@@ -9,7 +9,6 @@ include httpolice/known/README.rst
 include .coveragerc
 include pylintrc
 include pytest.ini
-include .eslintrc.js
 
 # Even though Travis only works on a Git repo,
 # this file is important as a reference on the build procedure.