and remove host-context as per dan

Author: notwaldorf

paper-input-char-counter.html

@@ -45,8 +45,7 @@
         display: none !important;
       }
 
-      :host(:dir(rtl)),
-      :host-context([dir="rtl"]) {
+      :host(:dir(rtl)) {
         float: left;
       }
     </style>

paper-input-container.html

@@ -259,9 +259,7 @@
       }
 
       :host(:dir(rtl)) .input-content.label-is-floating ::slotted(label),
-      :host(:dir(rtl)) .input-content.label-is-floating ::slotted(.paper-input-label),
-      :host-context([dir="rtl"]) .input-content.label-is-floating ::slotted(label),
-      :host-context([dir="rtl"]) .input-content.label-is-floating ::slotted(.paper-input-label) {
+      :host(:dir(rtl)) .input-content.label-is-floating ::slotted(.paper-input-label) {
         right: 0;
         left: auto;
         -webkit-transform-origin: right top;