Remove obsolete workaround

Author: mlafeldt

.github/workflows/rust.yaml

@@ -133,11 +133,6 @@ jobs:
           RUSTFLAGS: -Zsanitizer=address -C debuginfo=0
           RUSTDOCFLAGS: -Zsanitizer=address
           ASAN_OPTIONS: "detect_stack_use_after_return=1:detect_leaks=1:symbolize=1"
-          # Work around https://github.com/rust-lang/rust/issues/59125 by
-          # disabling backtraces. In an ideal world we'd probably suppress the
-          # leak sanitization, but we don't care about backtraces here, so long
-          # as the other tests have them.
-          RUST_BACKTRACE: "0"
         # We cannot run "modern-full" with asan as the chrono feature will auto-load relase binaries of
         # the ICU-extension, which are not built with ASAN and will cause a crash.
         run: |