Removed webfonts for visual tests

material/assets/javascripts/modernizr-5b0c41c2b5.js

material/assets/javascripts/modernizr-facb31f4a3.js

material/assets/stylesheets/application-180dae0b60.css

material/assets/stylesheets/application-ee6a3f36b0.css

material/base.html

src/assets/stylesheets/base/_typeset.scss

src/base.html

tests/visual/baseline/ci/admonition/#bug/@screen/chrome.png

tests/visual/baseline/ci/admonition/#bug/@screen/edge.png

tests/visual/baseline/ci/admonition/#bug/@screen/firefox.png

tests/visual/baseline/ci/admonition/#bug/@screen/ie11.png

...l/baseline/ci/admonition/#custom-title/@screen/chrome.png

...ual/baseline/ci/admonition/#custom-title/@screen/edge.png

.../baseline/ci/admonition/#custom-title/@screen/firefox.png

...ual/baseline/ci/admonition/#custom-title/@screen/ie11.png

.../visual/baseline/ci/admonition/#danger/@screen/chrome.png

tests/visual/baseline/ci/admonition/#danger/@screen/edge.png

...visual/baseline/ci/admonition/#danger/@screen/firefox.png

tests/visual/baseline/ci/admonition/#danger/@screen/ie11.png

...al/baseline/ci/admonition/#empty-title/@screen/chrome.png