Create and modify 3D models > Modify 3D geometry > Blend an edge > Remove a blend
  
Remove a blend
1. Click Modeling and then, in the Engineering group, click the arrow next to Blend.
2. Click Delete. The Remove Blend dialog box opens.
3. Select the blends to remove. By default, other affected blends are highlighted in the viewport as shown in the image below.
4. Click Add affected blends to select the other affected blends as shown in the image below.
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Click Clear active selection to deselect the selected blends.
Click Preview to preview the model with blends removed and the original edges visible.
5. Click to complete the operation.
You should use the Chk & Fix option to check the validity of the part after you have removed the blends. To delete multiple blends from a part, use ChainSelection.
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Select a blend in the viewport and click on the Command Mini Toolbar (CMT) to delete that blend.