Remove copy/pasted BUILD files that call kt_configure_toolchains

[Bencodes]

I believe these BUILD files got copy/pasted accidentally since they immediately fail when calling kt_configure_toolchains:

ERROR: Traceback (most recent call last):
        File "/private/var/tmp/_bazel_blee/705a39c26a4d07ab15f533d9e4d9df56/execroot/_main/bazel-out/darwin_arm64-fastbuild/bin/rules_kotlin_release/kotlin/internal/utils/BUILD.bazel", line 17, column 24, in <toplevel>
                kt_configure_toolchains()
        File "/private/var/tmp/_bazel_blee/705a39c26a4d07ab15f533d9e4d9df56/execroot/_main/bazel-out/darwin_arm64-fastbuild/bin/rules_kotlin_release/kotlin/internal/toolchains.bzl", line 346, column 13, in kt_configure_toolchains
                fail("kt_configure_toolchains must be called in kotlin/internal not %s" % native.package_name())
Error in fail: kt_configure_toolchains must be called in kotlin/internal not kotlin/internal/utils

[restingbull]

Ow.