build: remove configure check for cargo vendor

cargo vendor has been part of the core cargo command since Rust 1.37,
and are minimum Rust version is not 1.41, so remove the check. Its
always available now.

configure.ac

@@ -2305,21 +2305,6 @@ fi
     AC_SUBST(rust_vendor_comment)
     AM_CONDITIONAL([HAVE_RUST_VENDOR], [test "x$have_rust_vendor" = "xyes"])
 
-    # With Rust/Cargo 1.37 and greater, cargo-vendor is built-in.
-    AC_MSG_CHECKING(for cargo vendor support)
-    AS_VERSION_COMPARE([$cargo_version], [1.37.0],
-        [have_cargo_vendor="no"],
-        [have_cargo_vendor="yes"],
-        [have_cargo_vendor="yes"])
-    AC_MSG_RESULT($have_cargo_vendor)
-
-    # If Rust is older than 1.37, check for cargo-vendor as an
-    # external sub-command.
-    if test "x$have_cargo_vendor" != "xyes"; then
-        AC_CHECK_PROG(have_cargo_vendor_bin, cargo-vendor, yes, no)
-        have_cargo_vendor=$have_cargo_vendor_bin
-    fi
-
     have_rust_headers="no"
     AC_MSG_CHECKING(for $srcdir/rust/dist/rust-bindings.h)
     if test -f "$srcdir/rust/dist/rust-bindings.h"; then
@@ -2368,7 +2353,6 @@ fi
 
     AM_CONDITIONAL([HAVE_RUST_HEADERS], [test "x$have_rust_headers" = "xyes"])
     AM_CONDITIONAL([HAVE_CBINDGEN], [test "x$CBINDGEN" != "xno"])
-    AM_CONDITIONAL([HAVE_CARGO_VENDOR], [test "x$have_cargo_vendor" != "xno"])
 
     AC_ARG_ENABLE(rust_strict,
            AS_HELP_STRING([--enable-rust-strict], [Rust warnings as errors]),[enable_rust_strict=$enableval],[enable_rust_strict=no])
@@ -2589,7 +2573,6 @@ SURICATA_BUILD_CONF="Suricata Configuration:
   Rust compiler version:                   ${rust_compiler_version}
   Cargo path:                              ${CARGO}
   Cargo version:                           ${cargo_version_output}
-  Cargo vendor:                            ${have_cargo_vendor}
 
   Python support:                          ${enable_python}
   Python path:                             ${python_path}

rust/Makefile.am

@@ -1,11 +1,8 @@
 EXTRA_DIST =	src derive \
 		.cargo/config.in \
 		cbindgen.toml \
-		dist/rust-bindings.h
-
-if HAVE_CARGO_VENDOR
-EXTRA_DIST +=	vendor
-endif
+		dist/rust-bindings.h \
+		vendor
 
 if !DEBUG
 RELEASE = --release
@@ -79,12 +76,8 @@ check:
 		CARGO_TARGET_DIR="$(abs_top_builddir)/rust/target" \
 		$(CARGO) test --all $(RELEASE) --features "$(RUST_FEATURES)"
 
-if HAVE_CARGO_VENDOR
 vendor:
 	CARGO_HOME="$(CARGO_HOME)" @rustup_home@ $(CARGO) vendor > /dev/null
-else
-vendor:
-endif
 
 if HAVE_CBINDGEN
 gen/rust-bindings.h: $(RUST_SURICATA_LIB)