[bazel] Remove d8 alias

Fixes `buildifier` warning, since the alias has the same name
as the icu/noicu/d8 targets.
The alias was used in the CI bot, but this is no longer the case.

No-Try: true
Change-Id: Ie8e9b6b2d8510c78982ed4c6845b51a4d4378106
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3253356
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77644}

BUILD.bazel

@@ -3277,11 +3277,6 @@ v8_binary(
     noicu_deps = [":noicu/v8"],
 )
 
-alias(
-    name = "d8",
-    actual = ":icu/d8",
-)
-
 # This target forces torque to be compiled without pointer compression.
 v8_binary_non_pointer_compression(
     name = "torque_non_pointer_compression",