Stop echoing the command

mkClojureLib.nix

@@ -31,15 +31,14 @@ in stdenv.mkDerivation {
   nativeBuildInputs = [ clojure ];
   buildInputs = (map (x: x.paths) clj-deps.packages);
 
-  buildPhase = let
-    cmd = ''
+  buildPhase = ''
     HOME=$TEMP/home
     mkdir -p $HOME
     mkdir -p ${target}
 
     clojure \
       -Scp     .:${build-tools-jar}:${classpath} \
-        -Sdeps   ${build-tool-deps} \
+      -Sdeps   ${build-tools-deps} \
       -X:build \
       lib-uberjar \
       :project ${group}/${name} \
@@ -47,7 +46,6 @@ in stdenv.mkDerivation {
       :srcs    ${concatStringsSep "," src-paths} \
       :target  ${target}
   '';
-  in builtins.trace cmd cmd;
 
   installPhase = ''
     mv ${target}/${name}-${version}-standalone.jar $out