build: don't include cmake modules in this repository

The cmake module is for this project's parent. We only need it for
building and testing directly so we clone it during the testing phase.

.gitlab-ci.yml

@@ -12,6 +12,7 @@ build:
     - pacman --noconfirm -Sy
     - pacman --noconfirm -S python3 gcc ninja cmake ragel git
   script: 
+    - git clone git://git.nerdcruft.net/cmake
     - mkdir build && cd build
     - cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release -DLTO=ON -DTESTS=ON
     - ninja

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "cmake"]
-	path = cmake
-	url = git://git.nerdcruft.net/cmake

cmake

@@ -1 +0,0 @@
-Subproject commit 1c5ded53b31d695f01c4d1d666966336a855a53b