travis: don't build wlc, depend on wlc-git instead

.ci/build.sh

@@ -1,16 +0,0 @@
-#!/bin/bash
-
-# clone and build wlc
-git clone https://github.com/Cloudef/wlc.git
-cd wlc
-git submodule update --init --recursive # - initialize and fetch submodules
-mkdir target && cd target               # - create build target directory
-cmake -DCMAKE_BUILD_TYPE=Upstream ..    # - run CMake
-make                                    # - compile
-sudo make install                       # - install
-
-cd ../..
-
-# build sway
-cmake .
-make

.travis.yml

@@ -11,23 +11,17 @@ arch:
     - cmake
     - xorg-server-xwayland
     - asciidoc
-    - pcre
     - json-c
-    - pixman
     - wayland
-    - libxkbcommon
-    - libinput
-    - libx11
-    - libxcb
     - xcb-util-image
-    - libgl
-    - mesa
     - pango
     - cairo
     - gdk-pixbuf2
     - xcb-util-wm
+    - wlc-git
   script:
-    - "bash .ci/build.sh"
+    - "cmake ."
+    - "make"
 
 script:
   - "curl -s https://raw.githubusercontent.com/mikkeloscar/arch-travis/master/arch-travis.sh | bash"