R1:22d5eee82ab9

Unsquish "No File Chosen" text on image selection forms

Summary: Remove css class that was setting static width

Test Plan: Loaded user profile edit page, stretched browser around, saw that the text was happy

Reviewers: epriestley, btrahan

Reviewed By: btrahan

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4806