Remove GUI

.github/workflows/run-checks.yml

@@ -45,7 +45,7 @@ jobs:
         with:
           python-version: ${{ matrix.py }}
       - name: Install dependencies
-        run: sudo apt -yy update && sudo apt -yy install libgirepository1.0-dev build-essential libbz2-dev libreadline-dev libssl-dev zlib1g-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libcairo2-dev
+        run: sudo apt -yy update && sudo apt -yy install graphviz
       - name: Install tox
         run: python -m pip install tox-gh>=1.2
       - name: Setup test suite

README.md

@@ -12,20 +12,6 @@ pipx install precice-config-visualizer
 
 ## Usage
 
-The config visualizer can be use via the CLI or the interactive GUI.
-
-### GUI
-
-```
-precice-config-visualizer-gui [CONFIG-FILE]
-```
-
-You can launch the GUI directly from the command line.
-Passing the path to a configuration file is optional.
-All further adjustments are made directly in the GUI.
-
-### CLI
-
 ```
 precice-config-visualizer --help
 precice-config-visualizer [OPTIONS] [-o OUTFILE] [<CONFIG-FILE>]