refactor: remove search icon from plan filter input

- It is not needed

Author: camargo

src/routes/plans/index.svelte

@@ -201,7 +201,6 @@
           Plans
         </Chip>
         <Input>
-          <i class="bi bi-search" slot="left" />
           <input bind:value={filterText} class="st-input" placeholder="Filter plans" style="width: 300px" />
         </Input>
       </svelte:fragment>