remove SASA project

We have an active PR open for SASA. MDAnalysis/mdanalysis#4025

_posts/2023-02-22-gsoc2023.md

@@ -54,7 +54,6 @@ as part of our decision criteria in choosing GSoC contributors.
 |---------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|------------|------------|------------------------------------------------------------------------------------------------|-----------------------------|----------------------------------------|
 | 1       | [Generalise Groups]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-1-bead-and-ring-groups)                                         | hard     | 350 hours   | Generalise concept of groups                                                                   | Python, NetworkX, Molecular modelling                  | @lilyminium, @fiona-naughton, @richardjgowers, @IAlibay, @micaela-matta, @ojeda-e, @yuxuanzhuang, @RMeli |
 | 2       | [Extend MDAnalysis Interoperability]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-2-extend-interoperability)                  | medium     | 350 hours   | Extend converters module to other relevant packages                                            | Python, Molecular Modelling                      | @lilyminium, @IAlibay, @fiona-naughton, @hmacdope, @yuxuanzhuang, @RMeli|
-| 3       | [Molecular volume and surface analysis]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-3-molecular-volume-and-surface-analysis) | medium       | 175 hours | use an existing package for molecular surface area calculations to build a new analysis module | Python, MDAnalysis.analysis, Molecular Modelling | @orbeckst, @IAlibay, @hmacdope, @yuxuanzhuang, @RMeli |
 | 4       | [Benchmarking and performance optimization]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-4-benchmarking-and-performance-optimization)                  | medium/hard     | 175 hours   |  write benchmarks for automated performance analysis and address performance bottlenecks | Python, Molecular Modelling                      | @hmacdope, @orbeckst, @ojeda-e, @RMeli |
 | 5       | [Transport property calculations]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-5-transport-property-calculations) | medium     | 350 hours   |  write analysis code to calculate physical transport properties | Python, Physics/Mathematics      | @orionarcher, @hmacdope |
 | 6       | [Implementation of parallel analysis framework]({{ site.github.wiki }}/GSoC-2023-Project-Ideas#project-6-parallel-analysis) | hard     | 350 hours   |  implement parallel framework in MDAnalysis| Python, Parallel Programming, Molecular Modelling      | @yuxuanzhuang, @orbeckst, @RMeli |