[BUGFIX] Button typography

Removes share font from buttons. The current font does
not render adequately.

Change-Id: I8d2a998275e52fbb831abb9046f3711e82acc401
Resolves: #55624
Releases: 6.2
Reviewed-on: https://review.typo3.org/27301
Tested-by: Markus Klein
Reviewed-by: Markus Klein
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer

typo3/sysext/t3skin/Resources/Public/Css/visual/main_form.css

@@ -39,7 +39,6 @@ input[type="button"] {
 	border-radius: 2px;
 	color: #fff;
 	display: inline-block;
-	font-family: Share, Verdana, Arial, Helvetica, sans-serif;
 	font-weight: normal;
 	line-height: 1.5em;
 	margin-bottom: 0;