fix(progressLinear): Remove extra semi-colon from SCSS.

There was a single extra semi-colon in the SCSS for the
progress linear. Fix by removing it.

Fixes #5260.

Author: topherfangio

src/components/progressLinear/progress-linear.scss

@@ -17,7 +17,7 @@ md-progress-linear {
     width:100%;
     height: $progress-linear-bar-height;
 
-    transform: translate(0, 0) scale(1, 1);;
+    transform: translate(0, 0) scale(1, 1);
 
     .md-bar {
       position: absolute;