Disable some files from Windows compilation for 9.2

[anand1976]

Disable the RocksDB follower code for Windows to prevent errors like - fbcode\rocksdb\src\env\fs_on_demand.cc:184:10: error: no member named 'for_each' in namespace 'std' std::for_each(rchildren.begin(), rchildren.end(), [&](std::string& name) { ~~~~~^

[facebook-github-bot]

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