To delete a node on a segment:
1. Click on the "Edit path by nodes"
tool button.

2. Then click on the object to select the nodes.

3. Click on the node you wish to delete in order to select it. Note that the selected node is highlighted.
4. Click on the "Delete selected nodes"
button on the tool bar to delete the selected node.

The remaining nodes adjacent to the one you deleted will now be connected with a Bezier curve.

5. With the "Edit path by nodes" tool selected, drag the segment shaping handles to adjust the shape of the segment between the two remaining adjacent nodes.
More Graphics Design Tips:
• SVG Code to Place Text on a Curved Path
• How to De-haze a Photo with GIMP
• Inkscape Document Properties
• Graphic Design Meets Open Source
• How to Create a Game App
• History of Type Development and Type Terminology
• Inkscape Basic Fill
• SVG Image Clipping
• Draw Bezier SVG Drawing Application
• Getting Started with Krita
