Fix less error

customize.dist/src/less2/include/drive.less

@@ -4,7 +4,6 @@
 @import (reference) "./limit-bar.less";
 @import (reference) "./tokenfield.less";
 @import (reference) "./dropdown.less";
-@import (reference) "./buttons.less";
 
 .drive_main() {
     --LessLoader_require: LessLoader_currentFile();
@@ -939,7 +938,6 @@
     .cp-app-drive-button {
         order: 15;
         margin: 0 1em;
-        .buttons_main();
     }
 
 }