scss mixin: remove-button-styles -> button-reset

stylesheets/_conversation.scss

@@ -751,7 +751,7 @@ span.status {
   cursor: pointer;
 
   button {
-    @include remove-button-styles;
+    @include button-reset;
   }
 
   .first-line {
@@ -869,7 +869,7 @@ span.status {
   margin-right: auto;
 
   button {
-    @include remove-button-styles;
+    @include button-reset;
   }
 
   .image-container {

stylesheets/_mixins.scss

@@ -1,4 +1,4 @@
-@mixin remove-button-styles() {
+@mixin button-reset {
   background: none;
   color: inherit;
   border: none;
@@ -13,6 +13,7 @@
   -webkit-mask-size: 100%;
   background-color: $color;
 }
+
 @mixin header-icon-white($svg) {
   @include color-svg($svg, rgba(255, 255, 255, 0.8));
   &:focus,
@@ -27,6 +28,7 @@
     @include color-svg($svg, black);
   }
 }
+
 @mixin avatar-colors {
   &.red {
     background-color: $material_red;