Remove the BINDGEN_RS_FILE env var from boringssl build rules

BoringSSL no longer uses the env var in Chromium, so this can
be dropped. It now uses OUT_DIR/bindgen.rs.

Also drop the visibility of the generated rs file from outside
the copy rule. 1p code should use rust_bindgen which depends on
the copy and thus transitively depends on the generation step.

R=davidben@chromium.org

Bug: b/373864033
Change-Id: I51e4339ce4cad8d6beba5141bb3b0d099b9fe04a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5979353
Reviewed-by: David Benjamin <davidben@chromium.org>
Commit-Queue: Mohannad Farrag <aymanm@google.com>
Cr-Commit-Position: refs/heads/main@{#1376267}
NOKEYCHECK=True
GitOrigin-RevId: 77a3722b16235d5956adc712d9424070b1950a95
1 file changed