Removes files that should belong only to master

bower_components/primer-css/scss/_mixins.scss

@@ -0,0 +1,54 @@
+// Clearfix
+//
+// Clears floats via mixin (avoid using as a class).
+
+@mixin clearfix {
+  &:before {
+    display: table;
+    content: "";
+  }
+
+  &:after {
+    display: table;
+    clear: both;
+    content: "";
+  }
+}
+
+// Creates a linear gradient background, from top to bottom.
+//
+// $start - The color hex at the top.
+// $end   - The color hex at the bottom.
+
+@mixin gradient($start: #fafafa, $end: #eaeaea) {
+  @warn "Gradient mixin is deprecated.";
+  // scss-lint:disable VendorPrefix
+  background-color: $end;
+  // FF 3.6+
+  background-image: -moz-linear-gradient($start, $end);
+  // Safari 5.1+, Chrome 10+
+  background-image: -webkit-linear-gradient($start, $end);
+  background-image: linear-gradient($start, $end);
+  background-repeat: repeat-x;
+}
+
+// Text hiding for image based text replacement.
+// Higher performance than -9999px because it only renders
+// the size of the actual text, not a full 9999px box.
+
+@mixin hide-text() {
+  overflow: hidden;
+  text-indent: 100%;
+  white-space: nowrap;
+}
+
+// Octicon bootstrap
+//
+// Quickly load the typography requirements for Octicons icon font.
+
+@mixin icon-bootstrap($size) {
+  font: normal normal #{$size}/1 "octicons";
+  display: inline-block;
+  text-decoration: none;
+  -webkit-font-smoothing: antialiased;
+}