[MD settings] remove override of the default font

The settings ui was explicitly setting the font to
a 14px font rather than allowing the md setting css
font settings through.  This CL removes setting the
14px font.  This makes the common font size 12px,
but that will be addressed in a future CL to bring
the font size to the desired 13px.

BUG=589630

Review URL: https://codereview.chromium.org/1762433002

Cr-Commit-Position: refs/heads/master@{#378842}
diff --git a/chrome/browser/resources/settings/settings_ui/settings_ui.css b/chrome/browser/resources/settings/settings_ui/settings_ui.css
index 8012391..1f35e98 100644
--- a/chrome/browser/resources/settings/settings_ui/settings_ui.css
+++ b/chrome/browser/resources/settings/settings_ui/settings_ui.css
@@ -5,7 +5,6 @@
 :host {
   @apply(--layout-vertical);
   @apply(--layout-fit);
-  @apply(--paper-font-body1);
   -webkit-user-select: none;
   background-color: var(--paper-blue-grey-50);
 }