00418: Don't generate sbom in make regen-all

The script and make target, added in Python 3.12.2, assumes a fixed
location of pip wheel and other bundled libraries, resulting in an
error and failed build when not found.
Reported upstream: python#114240
and python#114244

Co-Authored-By: Tomáš Hrnčiar <[email protected]>

Author: befeleme

Makefile.pre.in

@@ -1322,7 +1322,8 @@ regen-all: regen-cases regen-opcode regen-opcode-targets regen-typeslots \
 	regen-pegen-metaparser regen-pegen regen-test-frozenmain \
 	regen-test-levenshtein regen-global-objects
 	@echo
-	@echo "Note: make regen-stdlib-module-names, make-regen-sbom, and make regen-configure should be run manually"
+	@echo "Note: make regen-stdlib-module-names, make regen-configure and make regen-sbom "
+	@echo "should be run manually"
 
 ############################################################################
 # Special rules for object files