Fix duplicate arange_util targets issue

Author: larryliu0820

kernels/portable/cpu/util/targets.bzl

@@ -302,19 +302,6 @@ def define_common_targets():
         visibility = ["//executorch/kernels/portable/cpu/..."],
     )
 
-    runtime.cxx_library(
-        name = "arange_util",
-        srcs = ["arange_util.cpp"],
-        exported_headers = ["arange_util.h"],
-        deps = [
-            "//executorch/runtime/kernel:kernel_includes",
-        ],
-        visibility = [
-            "//executorch/kernels/portable/cpu/...",
-            "//executorch/extension/llm/...",
-        ],
-    )
-
     runtime.cxx_library(
         name = "broadcast_indexes_range",
         exported_headers = ["broadcast_indexes_range.h"],