Remove unnecessary dep

Author: jackzhxng

targets.bzl

@@ -32,9 +32,6 @@ def define_common_targets():
             ("include", "pytorch/tokenizers/regex.h"),
             ("include", "pytorch/tokenizers/*_regex.h"),
         ]),
-        deps = [
-            "fbsource//third-party/pcre2:pcre2-8",
-        ],
         exported_deps = [
             ":headers",
         ],