rust: Remove Rust support from tree

Closes #40469

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/core/or/include.am

@@ -28,7 +28,6 @@ LIBTOR_APP_A_SOURCES += 				\
 	src/core/or/orconn_event.c		\
 	src/core/or/policies.c			\
 	src/core/or/protover.c			\
-	src/core/or/protover_rust.c		\
 	src/core/or/reasons.c			\
 	src/core/or/relay.c			\
 	src/core/or/scheduler.c			\

src/core/or/protover.c

@@ -28,8 +28,6 @@
 #include "core/or/versions.h"
 #include "lib/tls/tortls.h"
 
-#ifndef HAVE_RUST
-
 static const smartlist_t *get_supported_protocol_list(void);
 static int protocol_list_contains(const smartlist_t *protos,
                                   protocol_type_t pr, uint32_t ver);
@@ -752,5 +750,3 @@ protover_free_all(void)
     supported_protocol_list = NULL;
   }
 }
-
-#endif /* !defined(HAVE_RUST) */

src/core/or/protover.h

@@ -99,13 +99,13 @@ typedef struct proto_entry_t {
   uint64_t bitmask;
 } proto_entry_t;
 
-#if !defined(HAVE_RUST) && defined(TOR_UNIT_TESTS)
+#if defined(TOR_UNIT_TESTS)
 STATIC struct smartlist_t *parse_protocol_list(const char *s);
 STATIC char *encode_protocol_list(const struct smartlist_t *sl);
 STATIC const char *protocol_type_to_str(protocol_type_t pr);
 STATIC int str_to_protocol_type(const char *s, protocol_type_t *pr_out);
 STATIC void proto_entry_free_(proto_entry_t *entry);
-#endif /* !defined(HAVE_RUST) && defined(TOR_UNIT_TESTS) */
+#endif /* defined(TOR_UNIT_TESTS) */
 
 #define proto_entry_free(entry) \
   FREE_AND_NULL(proto_entry_t, proto_entry_free_, (entry))

src/core/or/protover_rust.c

@@ -1,34 +0,0 @@
-/* Copyright (c) 2016-2021, The Tor Project, Inc. */
-/* See LICENSE for licensing information */
-
-/*
- * \file protover_rust.c
- * \brief Provide a C wrapper for functions exposed in /src/rust/protover,
- * and safe translation/handling between the Rust/C boundary.
- */
-
-#include "core/or/or.h"
-#include "core/or/protover.h"
-
-#ifdef HAVE_RUST
-
-/* Define for compatibility, used in main.c */
-void
-protover_free_all(void)
-{
-}
-
-int protover_contains_long_protocol_names_(const char *s);
-
-/**
- * Return true if the unparsed protover in <b>s</b> would contain a protocol
- * name longer than MAX_PROTOCOL_NAME_LENGTH, and false otherwise.
- */
-bool
-protover_list_is_invalid(const char *s)
-{
-  return protover_contains_long_protocol_names_(s) != 0;
-}
-
-#endif /* defined(HAVE_RUST) */
-