chawan: 0-unstable-2025-01-06 -> 0-unstable-2025-03-27

Also removed unused submodules to fix build.

https://git.sr.ht/~bptato/chawan/commit/cb1ec272443328c80d9e4bfb17f4853ff2745b16
https://git.sr.ht/~bptato/chawan/commit/4a1ca9038d05e2487d5d960c9a2642c2621b954d

Author: kachick

pkgs/by-name/ch/chawan/package.nix

@@ -16,14 +16,13 @@
 
 stdenv.mkDerivation {
   pname = "chawan";
-  version = "0-unstable-2025-01-06";
+  version = "0-unstable-2025-03-27";
 
   src = fetchFromSourcehut {
     owner = "~bptato";
     repo = "chawan";
-    rev = "30a933adb2bade2ceee08a9b36371cecf554d648";
-    hash = "sha256-EepSEN66GTdWfCSiR/p69pN5bvTEiUFOMErCxedrq+g=";
-    fetchSubmodules = true;
+    rev = "b2d954b96f227597b62cfae1ac64785bd8f0fb37";
+    hash = "sha256-1kxqzzEMGDFNk25mQX8p7TuADuTMIz+hHZ7p+i7m494=";
   };
 
   patches = [ ./mancha-augment-path.diff ];