Don't remove programs/fuzz/Makefile

Other programs/*/Makefile are only created by CMake, but programs/fuzz has
its own Makefile in the repository. Fixes #6247.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

tests/scripts/all.sh

@@ -120,6 +120,9 @@
 # Treat uninitialised variables as errors.
 set -e -o pipefail -u
 
+# Enable ksh/bash extended file matching patterns
+shopt -s extglob
+
 pre_check_environment () {
     if [ -d library -a -d include -a -d tests ]; then :; else
         echo "Must be run from mbed TLS root" >&2
@@ -295,7 +298,7 @@ cleanup()
               -iname CMakeCache.txt -o \
               -path './cmake/*.cmake' \) -exec rm -f {} \+
     # Recover files overwritten by in-tree CMake builds
-    rm -f include/Makefile include/mbedtls/Makefile programs/*/Makefile
+    rm -f include/Makefile include/mbedtls/Makefile programs/!(fuzz)/Makefile
 
     # Remove any artifacts from the component_test_cmake_as_subdirectory test.
     rm -rf programs/test/cmake_subproject/build