Revert borked submodules. See #1186.

Moult · Moult · commit 03d8537a2dcc · 2020-12-19T14:29:43.000+11:00
diff --git a/src/ifcopenshell-python/ifcopenshell/mvd b/src/ifcopenshell-python/ifcopenshell/mvd
@@ -0,0 +1 @@
+Subproject commit 2f0ce53d56b7d78ca7ef201305643f1aec3d4696
diff --git a/test/input b/test/input
@@ -0,0 +1 @@
+Subproject commit 68784d951181d2534eaf950e1e02dd10201abaaf
