refactor(cli): remove acquire step from package function

Remove the automatic acquire script execution during the packaging
process. The acquire step is no longer needed in the package workflow.

src/cli/Manifest.vala

@@ -362,18 +362,6 @@ private int uininstall() {
 }
 
 private int package() {
-    if(manifest.executables.acquire != null) {
-        printerr("Running acquire...\n");
-        var result = acquire();
-        if(result != 0) {
-            printerr(@"Acquire failed, code: $(result)\n");
-            return result;
-        }
-    }
-    else {
-        printerr("Warning: Manifest does not specify an acquire script, assuming we have everything we need already and packaging anyway.\n");
-    }
-
     printerr("Writing archive...\n");
     var output = @"../$(manifest.name)-$(manifest.version).usmc";
     try {