Remove unneeded XCRUNWRAPPER_LABEL value from shared.bzl.
Remove unneeded XCRUNWRAPPER_LABEL value from shared.bzl.

RELNOTES: f0ee9d779927904043957a26c02bda4e4c3dbe35@bazel_tools//tools/objc:xcrunwrapper instead.
PiperOrigin-RevId: 222151845

akira-baruah/bazel,dslomov/bazel,katre/bazel,bazelbuild/bazel,perezd/bazel,werkt/bazel,dslomov/bazel,aehlig/bazel,katre/bazel,davidzchen/bazel,twitter-forks/bazel,perezd/bazel,meteorcloudy/bazel,safarmer/bazel,safarmer/bazel,aehlig/bazel,aehlig/bazel,bazelbuild/bazel,dslomov/bazel,davidzchen/bazel,meteorcloudy/bazel,dslomov/bazel-windows,twitter-forks/bazel,ulfjack/bazel,katre/bazel,dslomov/bazel-windows,davidzchen/bazel,cushon/bazel,meteorcloudy/bazel,dslomov/bazel-windows,cushon/bazel,akira-baruah/bazel,werkt/bazel,cushon/bazel,perezd/bazel,werkt/bazel,davidzchen/bazel,werkt/bazel,dslomov/bazel-windows,twitter-forks/bazel,aehlig/bazel,akira-baruah/bazel,ulfjack/bazel,cushon/bazel,davidzchen/bazel,meteorcloudy/bazel,bazelbuild/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,perezd/bazel,werkt/bazel,cushon/bazel,dslomov/bazel,ButterflyNetwork/bazel,safarmer/bazel,safarmer/bazel,perezd/bazel,ulfjack/bazel,ButterflyNetwork/bazel,ulfjack/bazel,safarmer/bazel,twitter-forks/bazel,twitter-forks/bazel,meteorcloudy/bazel,ulfjack/bazel,dslomov/bazel,ulfjack/bazel,ulfjack/bazel,davidzchen/bazel,werkt/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,akira-baruah/bazel,perezd/bazel,meteorcloudy/bazel,dslomov/bazel-windows,akira-baruah/bazel,twitter-forks/bazel,safarmer/bazel,ButterflyNetwork/bazel,aehlig/bazel,katre/bazel,dslomov/bazel,cushon/bazel,aehlig/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,katre/bazel,katre/bazel,dslomov/bazel-windows,dslomov/bazel,davidzchen/bazel,meteorcloudy/bazel,bazelbuild/bazel,aehlig/bazel,perezd/bazel,akira-baruah/bazel