Duplicated code removed

Author: leandroguimaraes

angular/src/shared/core.less

@@ -7,7 +7,6 @@
 @light-blue: #03A9F4;
 @cyan: #00BCD4;
 @teal: #009688;
-@indigo: #3F51B5;
 @green: #4CAF50;
 @light-green: #8BC34A;
 @lime: #CDDC39;
@@ -137,10 +136,6 @@
     .make-theme(@teal)
 }
 
-.theme-indigo {
-    .make-theme(@indigo)
-}
-
 .theme-green {
     .make-theme(@green)
 }