build: remove all git submodules

Author: jarvis8x7b

.gitmodules

@@ -1,9 +0,0 @@
-[submodule "dojo-synthetic-api"]
-	path = dojo-synthetic-api
-	url = git@github.com:tensorplex-labs/dojo-synthetic-api.git
-[submodule "dojo-ui"]
-	path = dojo-ui
-	url = git@github.com:tensorplex-labs/dojo-ui.git
-[submodule "dojo-worker-api"]
-	path = dojo-worker-api
-	url = git@github.com:tensorplex-labs/dojo-worker-api.git