gnu: openssl: Remove redundant use of mkdir-p.

* gnu/packages/tls.scm (openssl)[arguments]: Remove redundant (mkdir-p).

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu/packages/tls.scm

@@ -294,7 +294,6 @@ required structures.")
                    (lib    (string-append out "/lib"))
                    (static (assoc-ref outputs "static"))
                    (slib   (string-append static "/lib")))
-              (mkdir-p slib)
               (for-each (lambda (file)
                           (install-file file slib)
                           (delete-file file))