Steps

To eliminate small stitches...

• Select Design Settings > Remove Small Stitches.
  
• Choose your preferred option:
  • When set to ‘Always’, the filter will be automatically applied in the background whenever objects are edited or digitized.
  • When set to ‘On Output’, the filter is only applied when printing or outputting files.
• Enter the minimum stitch length you want to preserve.
• Click OK to confirm.
• Check the Status Bar for the new stitch count.

Here's the link for more details and keep this for future reference. 
https://www.embroideryhelp.net/hatch/digitizer/en/user-guide/customize-designs/start-end-design