diff --git a/slides/README.md b/slides/README.md
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 # DuMu<sup>x</sup> course slides
-
-Click on the links to download the slides
-
-* [Slides on the basics]()
-* [Slides on the main file](./dumux-course-testproblem.pdf)
-* [Slides on runtime parameters and grids](./dumux-course-runtimeparams-grids.pdf)
diff --git a/slides/dumux-course-runtimeparams-grids.pdf b/slides/dumux-course-runtimeparams-grids.pdf
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-version https://git-lfs.github.com/spec/v1
-oid sha256:0c23749293951328c5095e5e7fbb1c5b0e488139a71cdc6a43a4baa99757b343
-size 323806
diff --git a/slides/dumux-course-testproblem.pdf b/slides/dumux-course-testproblem.pdf
deleted file mode 100644
index 09da8b3b9769bf2a87de6070854c23e5957e779a..0000000000000000000000000000000000000000
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-version https://git-lfs.github.com/spec/v1
-oid sha256:a6c85d3467592f902ac4579c1ceec4cc21adfc5aa5331a14f1f8216b54dedaaa
-size 262783