removing "min-height: 80px;" from class label

the css-class label is used in the fields section of the table panel. checked fields currently have a 80px rectangle around their names.
(cherry picked from commit a825d8e4f0ad09d595f1e7c584e4921f11d01a6e)

src/vendor/bootstrap/less/bootswatch.light.less

@@ -481,7 +481,6 @@ legend {
 
 .label {
 	min-width: 80px;
-	min-height: 80px;
 	.border-radius(0);
 	font-weight: 300;
 	text-shadow: none;