Remove deprecated CEL casting utilities

PiperOrigin-RevId: 994332706

Author: jcking

common/BUILD

@@ -143,7 +143,6 @@ cc_test(
         "//internal:testing_descriptor_pool",
         "@com_google_absl//absl/status:status_matchers",
         "@com_google_absl//absl/status:statusor",
-        "@com_google_absl//absl/types:optional",
     ],
 )
 
@@ -463,15 +462,6 @@ cc_test(
     ],
 )
 
-cc_library(
-    name = "casting",
-    hdrs = ["casting.h"],
-    deps = [
-        "//common/internal:casting",
-        "@com_google_absl//absl/base:core_headers",
-    ],
-)
-
 cc_library(
     name = "json",
     hdrs = ["json.h"],
@@ -757,7 +747,6 @@ cc_library(
         ":allocator",
         ":any",
         ":arena",
-        ":casting",
         ":kind",
         ":memory",
         ":native_type",
@@ -833,7 +822,6 @@ cc_test(
         "value_test.cc",
     ],
     deps = [
-        ":casting",
         ":memory",
         ":native_type",
         ":type",

common/casting.h

@@ -17,17 +17,6 @@ load("@rules_cc//cc:cc_test.bzl", "cc_test")
 
 package(default_visibility = ["//visibility:public"])
 
-cc_library(
-    name = "casting",
-    hdrs = ["casting.h"],
-    deps = [
-        "//internal:casts",
-        "@com_google_absl//absl/base:core_headers",
-        "@com_google_absl//absl/meta:type_traits",
-        "@com_google_absl//absl/types:optional",
-    ],
-)
-
 cc_library(
     name = "byte_string",
     srcs = ["byte_string.cc"],