Before PR #15310, which reworked how build files (Makefile, ...) were
generated, everything was done when configuring, so configdata.pm
could depend on build file templates and we'd get away with it.

However, since building configdata.pm is now independent of the build
file templates, that dependency is unnecessary, and would lead to
surprises of the build file template is updated, with an unexpected
full reconfiguration as a result, when all that's needed is to run
configdata.pm with no flags to get the build file re-generated.

This change is therefore a completion of what was forgotten in #15310.
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: NTomas Mraz <tomas@openssl.org>
Reviewed-by: NPaul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17756)