You can delete or rename all the shapes in the library you have uploaded.
Note: It is assumed that you’re currently in the Editor workspace. For more info how to get there, click here.
Step1. Click the Library button from the right toolbar.
Step2. Go to the Shapes tab and click the Custom category to delete or rename the shape you have uploaded.
Step3. Click the shape you wish and choose either to delete it or just rename it.