diff --git a/.gitmodules b/.gitmodules
index e01fc8c..dc12ff0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +1,3 @@
-[submodule "documents/Moderne-Physik"]
-	path = documents/Moderne-Physik
-	url = https://github.com/parttimenerd/Moderne-Physik
-[submodule "documents/NeuralNets"]
-	path = documents/NeuralNets
-	url = https://github.com/Marvin182/NeuralNets.git
 [submodule "documents/GeoTopo"]
 	path = documents/GeoTopo
 	url = https://github.com/MartinThoma/GeoTopo.git
diff --git a/documents/Moderne-Physik b/documents/Moderne-Physik
deleted file mode 160000
index edaa9af..0000000
--- a/documents/Moderne-Physik
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit edaa9afed626737344b2930b82a19844f8820bb2
diff --git a/documents/NeuralNets b/documents/NeuralNets
deleted file mode 160000
index 7689bec..0000000
--- a/documents/NeuralNets
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 7689bec0c5ba1998196171f706f895abb5ddb475