perl: remove mkdirp from setup_dependent_package (#43733)

var/spack/repos/builtin/packages/perl/package.py

@@ -455,10 +455,6 @@ def setup_dependent_package(self, module, dependent_spec):
             # Add variables for library directory
             module.perl_lib_dir = dependent_spec.prefix.lib.perl5
 
-            # Make the site packages directory for extensions,
-            # if it does not exist already.
-            mkdirp(module.perl_lib_dir)
-
     def setup_build_environment(self, env):
         if sys.platform == "win32":
             env.append_path("PATH", self.prefix.bin)