Al final

app/views/global/view-three-year-plan.blade.php

                       <select class="select-0" name="" style="width:100%;max-width:55%;">
                         <option class="default-option" value="nothing_selected">Select a course</option>
                       </select>
-                      <button class="btn btn-md btn-danger delete-selection-0" style="margin:5px;"><span class="glyphicon glyphicon-minus"></span> remove</button>
+                      <button class="btn btn-md btn-primary delete-selection-0" style="margin:5px;"><span ></span> X</button>
                     </div>
                     <div class="clone-objective-course-select-0">
                       <button class="btn btn-md btn-secondary add-objective-course" style="margin:5px;"><span class="glyphicon glyphicon-plus"></span> Choose more Courses</button>