Deprecate non-murmur3 partitioners
Deprecate non-murmur3 partitioners

Removing non-murmur3 partitioners will allow us to reduce memory footprint
and speed up some code by utilizing the properties of the murmur3 partitioner
token.
Message-Id: <51e206aa096c07b42b748ecca77c6456a3145023@scylladb.com>

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