Better fix to "GCC is installed multiple times" #25011
Description
#24907 added some code to configure.ac that may remove files from $SAGE_LOCAL when running ./configure. This is at best a bit sketchy. Instead it should modify something in the Makefile--e.g. enable some rule to clean up GCC. I haven't fully considered the details yet. Ideally a fix to this would also not conflict too much with #24919.
Configure tarball: https://github.com/sagemath/sage-prod/files/10659130/configure-280.tar.gz
Component: build
Author: Erik Bray
Branch: dc56a6c
Reviewer: Julian Rüth, Dima Pasechnik
Issue created by migration from https://trac.sagemath.org/ticket/25011