Redundant closure return types inlay hints

[NotWearingPants]

With closure return types inlay hints enabled, the return type is reported even when it is specified explicitly:

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rust-analyzer version: rust-analyzer version: 7e95c14 2022-05-17 stable

rustc version: rustc 1.61.0 (fe5b13d68 2022-05-18)

relevant settings: "rust-analyzer.inlayHints.closureReturnTypeHints.enable": true