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:
• How to Really Create an Arc in SVG
• Inkscape - How to Use Bitmap Image Fill Pattern
• HTML5 Canvas
• MathML Element to Display a Radical
• How to Place Greek Letters in an Inkscape Drawing
• Inkscape Circles, Ellipses, and Arcs Drawing Tutorial
• SVG Code to Translate a Rectangle and Text
• Graphic Design Meets Open Source
• Inkscape Preferences
• How to Make a Simple Animated Banner in Flash CS3
