remove css for button

src/client/styles/scss/atoms/_buttons.scss

@@ -1,36 +1,5 @@
-.btn.btn-circle {
-  width: 30px;
-  height: 30px;
-  padding: 6px 0;
-  font-size: 12px;
-  line-height: 1.428571429;
-  text-align: center;
-  border-radius: 15px;
-}
-
-.btn-circle.btn-lg {
-  width: 50px;
-  height: 50px;
-  padding: 10px 16px;
-  font-size: 18px;
-  line-height: 1.33;
-  border-radius: 25px;
-}
-
-.btn-circle.btn-xl {
-  width: 70px;
-  height: 70px;
-  padding: 10px 16px;
-  font-size: 24px;
-  line-height: 1.33;
-  border-radius: 35px;
-}
-
 .btn.btn-like,
 .btn.btn-bookmark {
-  font-size: 1.2em;
-  line-height: 1em;
-
   &.active,
   &:hover {
     // header buttons are always white for active