I've very slightly formatted the deletions so as to not require a style cleanup later and obscure
The `mipsel` `target_arch` was introduced with the initial MIPSel support (rust-lang/rust@82ec1ae), but was subsequently removed with implementation of the Flexible Target Specification (Rust RFC 0131, rust-lang/rust@3a8f4ec). Remove these to be consistent with other arches and reduce confusion. I've very slightly formatted the deletions so as to not require a style cleanup later and obscure `git blame` output.
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Remove mention of mipsel target_arch This is the only remaining instance in rustc. All others were in the libc repo, removed with rust-lang/libc#445. Actually there's more to clean in `libsyntax/abi.rs`, but let's save that for another commit...