Kusama V0.6 builing warnings

[blackhatzw]

Source code: origin/V0.6

Compiling substrate-consensus-babe v2.0.0 (https://github.com/paritytech/substrate?branch=polkadot-master#e0d486d6)
Compiling polkadot-statement-table v0.6.0 (/home/ubuntu/kusama/polkadot/statement-table)
warning: unused import: StorageMap
--> runtime/src/slots.rs:26:41
|
26 | decl_module, decl_storage, decl_event, StorageMap, ensure,
| ^^^^^^^^^^
|
= note: #[warn(unused_imports)] on by default

warning: type alias is never used: NegativeImbalanceOf
--> runtime/src/crowdfund.rs:86:1
|
86 | pub type NegativeImbalanceOf = <::Currency as Currency<::AccountId>>::NegativeImbalance;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(dead_code)] on by default

Compiling polkadot-executor v0.6.0 (/home/ubuntu/kusama/polkadot/executor)
Compiling rocksdb v0.10.1
Compiling rocksdb v0.11.0