get_dnf5_cmd: Do not set reposdir and config_file_path

They are taken from installroot by default.
Setting it explicitly via the CLI will hide the default behavior.
And it changes the behavior if dnf.conf is not present.

dnf-behave-tests/dnf/environment.py

@@ -235,8 +235,6 @@ def get_dnf5_cmd(self, context):
         for key,value in setopts.items():
             result.append("--setopt={0}={1}".format(key, value))
 
-        result.append("--setopt=reposdir=%s" % self.installroot + "/etc/yum.repos.d")
-        result.append("--setopt=config_file_path=%s" % self.installroot + "/etc/dnf/dnf.conf")
         result.append("--setopt=cachedir=%s" % self.installroot + "/var/cache/dnf")
 
         return result