[rpms/boost] rawhide: Remove BuildRequires: m4

[rpms/boost] rawhide: Remove BuildRequires: m4

[Jonathan Wakely]

            A new commit has been pushed.

            Repo   : rpms/boost
            Branch : rawhide
            Commit : 7c1a7f99ba2ab4dee5a1807e775bd411f2305b4d
            Author : Jonathan Wakely <jwakely@fedoraproject.org>
            Date   : 2026-06-19T17:41:55+01:00
            Stats  : +0/-1 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/boost/c/7c1a7f99ba2ab4dee5a1807e775bd411f2305b4d?branch=rawhide

            Log:
            Remove BuildRequires: m4

This was shown by the unbreq plugin to be not used.

It was added in cb253a3d3ffe2b37be852ba062212916f35275c2 for use when
creating the libboost_thread.so linker script. That linker script was
dropped in ec7383f6bdb448f5846ef7a8f2f527c4bc3cc965 when rebasing to
1.90.0 which removed the libboost_system.so shared lib.

---
diff --git a/boost.spec b/boost.spec
index 75ef370..cc8c535 100644
--- a/boost.spec
+++ b/boost.spec
@@ -126,7 +126,6 @@ Recommends: (boost-numpy3 if python3-numpy)
 %endif
 
 BuildRequires: gcc-c++
-BuildRequires: m4
 BuildRequires: libstdc++-devel
 BuildRequires: bzip2-devel
 BuildRequires: zlib-devel