rust: stop claiming the C index is compatible with the rust code
This is no longer the case since the introduction of the pure Rust Index, and
was probably not the case since the MixedIndex itself.
So we fix the dedicated attribute value.
--- a/mercurial/cext/revlog.c Thu Feb 22 15:11:26 2024 +0100
+++ b/mercurial/cext/revlog.c Fri Feb 23 03:44:56 2024 +0100
@@ -3226,7 +3226,6 @@
}
if (self->format_version == format_v1) {
- self->rust_ext_compat = 1;
self->entry_size = v1_entry_size;
} else if (self->format_version == format_v2) {
self->entry_size = v2_entry_size;