Fix expectations in NinjaRustBinaryTargetWriterTest.SwiftModule

The change in https://gn-review.googlesource.com/c/gn/+/17300 removed
native dependencies from the library search paths. But the SwiftModule
test landed around the same time and did not get that change included
in its expectations. Update the test to match what GN does now.

Bug: 370
Change-Id: I9934965641e66201a1eabb8ec37644d7f8cf4d09
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/17340
Reviewed-by: Takuto Ikuta <tikuta@google.com>
Reviewed-by: Dana Jansens <danakj@google.com>
Commit-Queue: Takuto Ikuta <tikuta@google.com>
diff --git a/src/gn/ninja_rust_binary_target_writer_unittest.cc b/src/gn/ninja_rust_binary_target_writer_unittest.cc
index 921580c..65be062 100644
--- a/src/gn/ninja_rust_binary_target_writer_unittest.cc
+++ b/src/gn/ninja_rust_binary_target_writer_unittest.cc
@@ -2076,7 +2076,7 @@
       "  source_file_part = exe.rs\n"
       "  source_name_part = exe\n"
       "  externs =\n"
-      "  rustdeps = -Lnative=obj/foo -Clink-arg=-Bdynamic "
+      "  rustdeps = -Clink-arg=-Bdynamic "
       "-Clink-arg=obj/foo/file1.o -Clink-arg=obj/foo/file2.o "
       "-Clink-arg=-swiftmodule=obj/foo/Foo.swiftmodule\n"
       "  ldflags =\n"