build: don't link pixman

River doesn't require any symbols from pixman (yet) and zig doesn't
seem to have an issue finding the headers anymore.

 build.zig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/build.zig b/build.zig
index 95a4d5f..1baf9a9 100644
--- a/build.zig
+++ b/build.zig
@@ -121,7 +121,6 @@ fn addServerDeps(exe: *std.build.LibExeObjStep) void {
 
     exe.linkLibC();
     exe.linkSystemLibrary("libevdev");
-    exe.linkSystemLibrary("pixman-1");
     exe.linkSystemLibrary("wayland-server");
     exe.linkSystemLibrary("wlroots");
     exe.linkSystemLibrary("xkbcommon");