Remove (hopefully) unused submodules

Author: alanz

.gitmodules

@@ -1,8 +1,24 @@
+# To remove a submodule you need to:
+#
+#     Delete the relevant section from the .gitmodules file.
+#     Stage the .gitmodules changes git add .gitmodules
+#     Delete the relevant section from .git/config.
+#     Run git rm --cached path_to_submodule (no trailing slash).
+#     Run rm -rf .git/modules/path_to_submodule
+#     Commit git commit -m "Removed submodule <name>"
+#     Delete the now untracked submodule files
+#     rm -rf path_to_submodule
+
+
 [submodule "submodules/HaRe"]
 	path = submodules/HaRe
 	# url = https://github.com/bubba/HaRe.git
 	url = https://github.com/alanz/HaRe.git
 
+[submodule "submodules/brittany"]
+	path = submodules/brittany
+	url = https://github.com/lspitzner/brittany.git
+
 [submodule "submodules/cabal-helper"]
 	path = submodules/cabal-helper
 	# url = https://github.com/arbor/cabal-helper.git
@@ -16,20 +32,3 @@
 	url = https://github.com/alanz/ghc-mod.git
 
 
-[submodule "submodules/yi-rope"]
-	path = submodules/yi-rope
-        url = https://github.com/yi-editor/yi-rope.git
-
-[submodule "submodules/haskell-lsp"]
-	path = submodules/haskell-lsp
-	url = https://github.com/alanz/haskell-lsp.git
-
-[submodule "submodules/brittany"]
-	path = submodules/brittany
-	url = https://github.com/lspitzner/brittany.git
-[submodule "submodules/apply-refact"]
-	path = submodules/apply-refact
-	url = https://github.com/alanz/apply-refact.git
-[submodule "submodules/lsp-test"]
-	path = submodules/lsp-test
-	url = https://github.com/alanz/lsp-test.git