5eb2de1660 Remove TODO about rand trait (Tobin C. Harding)
66cc007c2b p2p: Remove TODO comments (Tobin C. Harding)
0b5fb45ea0 consensus: Remove HEX_BUF_SIZE todo (Tobin C. Harding)
579668892a consensus: Remove TODO (Tobin C. Harding)
53beb9db30 Remove ancient todos in test code (Tobin C. Harding)
abe2241828 units: Remove "alloc" TODO (Tobin C. Harding)
5386ef0fd2 psbt: Delete TODO comments (Tobin C. Harding)
14c8a2232b examples: Remove TODO (Tobin C. Harding)
Pull request description:
Done while working on #2368. There are 5 left. Do we want to leave the MSRV ones in there?
```bash
bitcoin/src/blockdata/weight.rs:66: // TODO replace with panic!() when MSRV = 1.57+
bitcoin/src/consensus/serde.rs:101: // TODO: statically prove impossible cases
bitcoin/src/pow.rs:445: // TODO: Use `carrying_mul` when stabilized: https://github.com/rust-lang/rust/issues/85532
units/src/amount.rs:595: // TODO replace whith unwrap() when available in const context.
units/src/amount.rs:599: // TODO replace with panic!() when MSRV = 1.57+
```
ACKs for top commit:
Kixunil:
ACK 5eb2de1660
apoelstra:
ACK 5eb2de1660
Tree-SHA512: 285b1711a6e6fba126e2c4159b25454c7f894122b76fde1d3d29e57b2ec0a6e90230e46ac79d70aa133da177c75d267fc5a13489b69881862649de771027ec8e
6bd8375959