apiserver: Remove the deprecated `--deserialization-cache-size` flag
apiserver: Remove the deprecated `--deserialization-cache-size` flag

Signed-off-by: ialidzhikov <i.alidjikov@gmail.com>

Kubernetes-commit: ee2530ffd4db0cdc8384f7d4acb014e79bb224e9

kubernetes/apiserver,kubernetes/apiserver