fix(pat-bumper): Remove style import from the patterns SCSS file.

Author: thet

_sass/_patterns.scss

@@ -16,7 +16,6 @@
 @import "components/icon";
 @import "src/pat/auto-scale/auto-scale";
 @import "src/pat/auto-suggest/auto-suggest";
-@import "src/pat/bumper/bumper";
 @import "src/pat/carousel/carousel";
 @import "src/pat/checklist/checklist";
 @import "src/pat/collapsible/collapsible";