Remove submodules in opengeode

.gitmodules

-[submodule "asn1-value-editor"]
-	path = asn1-value-editor
-	url = https://gitrepos.estec.esa.int/taste/asn1-value-editor.git
-[submodule "speedometer"]
-	path = speedometer
-	url = https://gitrepos.estec.esa.int/taste/speedometer.git
-[submodule "properties"]
-	path = properties
-	url = https://gitrepos.estec.esa.int/taste/properties.git
-[submodule "dmt"]
-	path = dmt
-	url = https://gitrepos.estec.esa.int/taste/dmt.git
-[submodule "pymsc"]
-	path = pymsc
-	url = https://gitrepos.estec.esa.int/taste/pymsc.git
-[submodule "singledispatch"]
-	path = singledispatch
-	url = https://gitrepos.estec.esa.int/taste/singledispatch.git
-[submodule "enum34"]
-	path = enum34
-	url = https://gitrepos.estec.esa.int/taste/enum34.git
-[submodule "antlr3-python"]
-	path = antlr3-python
-	url = https://gitrepos.estec.esa.int/taste/antlr3-python.git
-[submodule "pygraphviz"]
-	path = pygraphviz
-	url = https://gitrepos.estec.esa.int/maxime-esa/pygraphviz.git