Remove OCaml 5 patch

Equivalent change is now upstream.

virt-v2v-ocaml5.patch

@@ -1,17 +0,0 @@
---- virt-v2v-2.3.4/common/mlstdutils/std_utils.ml.orig	2023-02-20 12:00:29.154785477 -0700
-+++ virt-v2v-2.3.4/common/mlstdutils/std_utils.ml	2023-07-10 09:34:10.295869331 -0600
-@@ -341,12 +341,12 @@ module List = struct
-       | x::xs, y::ys, z::zs -> (x, y, z) :: combine3 xs ys zs
-       | _ -> invalid_arg "combine3"
- 
--    let rec assoc_lbl ?(cmp = Pervasives.compare) ~default x = function
-+    let rec assoc_lbl ?(cmp = Stdlib.compare) ~default x = function
-       | [] -> default
-       | (y, y') :: _ when cmp x y = 0 -> y'
-       | _ :: ys -> assoc_lbl ~cmp ~default x ys
- 
--    let uniq ?(cmp = Pervasives.compare) xs =
-+    let uniq ?(cmp = Stdlib.compare) xs =
-       let rec loop acc = function
-         | [] -> acc
-         | [x] -> x :: acc

virt-v2v.spec

@@ -6,7 +6,7 @@
 %global patches_touch_autotools %{nil}
 %else
 # On RHEL the downstream patches always touch autotools files.
-%global patches_touch_autotools 1
+%global patches_touch_autotools %{nil}
 %endif
 
 # The source directory.
@@ -31,9 +31,6 @@ Source2:       libguestfs.keyring
 # Maintainer script which helps with handling patches.
 Source3:       copy-patches.sh
 
-# Adapt to OCaml 5.0.0
-Patch0:        %{name}-ocaml5.patch
-
 %if !0%{?rhel}
 # libguestfs hasn't been built on i686 for a while since there is no
 # kernel built for this architecture any longer and libguestfs rather