mu: remove some dead code

lib/mu-util.h

@@ -109,8 +109,6 @@ gboolean mu_util_check_dir (const gchar* path, gboolean readable,
  */
 const char* mu_util_cache_dir (void) G_GNUC_CONST;
 
-
-
 /**
  * create a writeable file and return its file descriptor (which
  * you'll need to close(2) when done with it.)
@@ -246,17 +244,6 @@ GQuark mu_util_error_quark (void) G_GNUC_CONST;
 #define MU_ERROR_DOMAIN (mu_util_error_quark())
 
 
-/**
- * convert a string array in to a string, with the elements separated
- * by ' '
- *
- * @param params a non-NULL, NULL-terminated string array
- *
- * @return a newly allocated string
- */
-gchar* mu_util_str_from_strv (const gchar **params)
-G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
-
 /*
  * for OSs with out support for direntry->d_type, like Solaris
  */