libs/libsodium: Avoid usage of legacy scheme path format

recipes/libs/libsodium/random.patch

@@ -1,14 +0,0 @@
---- a/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c	2018-06-03 07:26:17.413729023 +0200
-+++ b/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c	2018-06-03 07:41:40.119390067 +0200
-@@ -162,10 +162,7 @@
- /* LCOV_EXCL_START */
-     struct stat        st;
-     static const char *devices[] = {
--# ifndef USE_BLOCKING_RANDOM
--        "/dev/urandom",
--# endif
--        "/dev/random", NULL
-+        "rand:", NULL
-     };
-     const char       **device = devices;
-     int                fd;

recipes/libs/libsodium/recipe.toml

@@ -1,9 +1,6 @@
 [source]
 tar = "https://github.com/jedisct1/libsodium/archive/1.0.16.tar.gz"
 blake3 = "2482633f872c173f9a42e6badb44c3efb042e783e664fdf8b1046babfa2405e7"
-patches = [
-    "random.patch"
-]
 script = "./autogen.sh"
 
 [build]