All/task/unst 9151 remove triangle from delft3d

[jjnoort]

What was done

• e.g. Restarts are made more robust
• e.g. Fixes a bug related to the writing of water depth on the map file
• e.g. Introduces a new functionality on energy losses at bridge peirs
• e.g. …

Evidence of the work done

• Video/figures
  <add video/figures if applicable>
• Clear from the issue description
• Not applicable

Tests

• Tests updated
  <add testcase numbers if applicable, Issue number>
• Not applicable

Documentation

• Documentation updated
  <add description of changes if applicable, Issue number>
• Not applicable

Issue link