bootstrap: Remove CSS for ".input-xxlarge" elements.

We use "input-xxlarge" class for search box in activity
support page only. This commit adds the width property
in activity.css for the search box and rest of the CSS
applied using this class was redundant and can be removed
safely.

web/styles/portico/activity.css

@@ -144,3 +144,13 @@ tr.admin td:first-child {
     border-color: hsl(0deg 0% 83%);
     border-radius: 2px;
 }
+
+.search-query.input-xxlarge {
+    width: 530px;
+}
+
+@media (width <= 767px) {
+    .search-query.input-xxlarge {
+        width: 100%;
+    }
+}

web/third/bootstrap/css/bootstrap.css

@@ -518,9 +518,6 @@ input:-ms-input-placeholder {
 input::-webkit-input-placeholder {
   color: #999999;
 }
-.input-xxlarge {
-  width: 530px;
-}
 input {
   margin-left: 0;
 }
@@ -1439,14 +1436,6 @@ button.close {
   .row {
     margin-left: 0;
   }
-  .input-xxlarge {
-    display: block;
-    width: 100%;
-    min-height: 30px;
-    -webkit-box-sizing: border-box;
-    -moz-box-sizing: border-box;
-    box-sizing: border-box;
-  }
   .input-append input {
     display: inline-block;
     width: auto;