As a result of the commit 98fcd437 ("ci:
add CMAKE_EXTRA_PARAMS to LuaJIT workflow") both <inputs.buildtype> and
<inputs.GC64> parameters have become obsolete. All jobs with LuaJIT
integration testing has started to use these in scope of the commit
tarantool/luajit@5b53850da30e532ced976e95af1f301667a6a272 ("ci: use
CMAKE_EXTRA_PARAMS in LuaJIT integration"). Hence, the value of
<inputs.CMAKE_EXTRA_PARAMS> has to be used to specify the build flavor,
so <inputs.buildtype> and <inputs.GC64> can be dropped later.

NO_DOC=ci
NO_TEST=ci
NO_CHANGELOG=ci

Reviewed-by: Yaroslav Lobankov <y.lobankov@tarantool.org>
Signed-off-by: Igor Munkin <imun@tarantool.org>