Remove unused syslog dependency for Fuchsia.

PiperOrigin-RevId: 798883577
Change-Id: Id248b44a45c6d3eb173513b1cd2bb8fb564885ed

Author: Abseil Team

BUILD.bazel

@@ -161,7 +161,6 @@ cc_library(
         # Otherwise, builds targeting Fuchsia would fail to compile.
         ":fuchsia": [
             "@fuchsia_sdk//pkg/fdio",
-            "@fuchsia_sdk//pkg/syslog",
             "@fuchsia_sdk//pkg/zx",
         ],
         "//conditions:default": [],