refactor(card): remove old classes

Author: SisIvanova

src/app/theming/shadows/card-sample-shadow/card-sample-shadow.html

@@ -19,12 +19,10 @@ <h5 class="igx-card-header__subtitle">subtitle</h5>
             </p>
         </igx-card-content>
         <igx-card-actions>
-            <div class="igx-card-actions__igroup--start">
-                <span igxIconButton="flat" igxRipple [igxRippleCentered]="true">
-                    <igx-icon fontSet="material">favorite</igx-icon>
-                </span>
-            </div>
             <button igxButton igxRipple>Follow</button>
+            <span igxStart igxIconButton="flat" igxRipple [igxRippleCentered]="true">
+                <igx-icon fontSet="material">favorite</igx-icon>
+            </span>
         </igx-card-actions>
     </igx-card>
 </div>
@@ -50,12 +48,10 @@ <h5 class="igx-card-header__subtitle">subtitle</h5>
             </p>
         </igx-card-content>
         <igx-card-actions>
-            <div class="igx-card-actions__igroup--start">
-                <span igxIconButton="flat" igxRipple [igxRippleCentered]="true">
-                    <igx-icon fontSet="material">favorite</igx-icon>
-                </span>
-            </div>
             <button igxButton igxRipple>Follow</button>
+            <span igxStart igxIconButton="flat" igxRipple [igxRippleCentered]="true">
+                <igx-icon fontSet="material">favorite</igx-icon>
+            </span>
         </igx-card-actions>
     </igx-card>
 </div>