Ditch unused `.dictionaries tbody` color rule

This style is shadowed by the more specific `.full tbody` rule in tables.less:

https://github.com/mozilla/olympia/blob/181dc72ca40352f63ba01fe76f29836e4ca0dba2/static/css/impala/tables.less#L20-22

Might as well nuke the unused one.
Commit from Mozilla Verbatim by user upwinxp.: 2844 of 3015 strings translated (1 fuzzy).
Bug 1073742 - Add choices to platform PositiveIntegerFields.
Use a TypedChoiceField in devhub.forms.CompatForm so that unchanged extras are detected correctly.
Merge pull request #302 from kmaglione/bug-1073742

Bug 1073742 - Add choices to platform PositiveIntegerFields.
Merge branch 'master' of github.com:mozilla/olympia
remove redundant filters
Revert "fix import typo in `local_settings.dev.py`"

This reverts commit 0535064f963aebe3581884a38492b8ec76566690.
Merge pull request #304 from meyarivan/master

Bug 1073977 - To remove redundant filters from Hive query for theme_update_counts
Add Optimizely to all pages. Bug 1073115.
Merge branch 'master' of github.com:mozilla/olympia
Merge pull request #297 from callahad/master

Ditch unused `.dictionaries tbody` color rule
Merge branch 'master' of github.com:mozilla/olympia
Add a data generator to replace landfill (bug 1061143)
Paypal form improvements (bug 1061203)
Enforce comment length to 255 characters max and
the amount to be at least 0.01 in addons.contribute view and form.
Extract/compile script.  Today's lucky number is 11133.
Commit from Mozilla Verbatim by user michael.koehler1@gmx.de.: 3008 of 3008 strings translated (0 fuzzy).
Merge pull request #306 from jpetto/bug-1073115-add-optimizely

Add Optimizely to all pages. Bug 1073115.
Commit from Mozilla Verbatim by user yfdyh000.: 3008 of 3008 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user petercpg@mail.moztw.org.: 3008 of 3008 strings translated (0 fuzzy).