Drop T-types relnotes

Co-authored-by: lcnr <rust@lcnr.de>

Author: Mark-Simulacrum

RELEASES.md

@@ -1,18 +1,6 @@
 Version 1.79.0 (2024-06-13)
 ==========================
 
-<!-- FIXME: unsorted T-types relnotes -->
-- [check `FnDef` return type for WF](https://github.com/rust-lang/rust/pull/115538/)
-- [rework opaque type region inference](https://github.com/rust-lang/rust/pull/116891/)
-- [instantiate higher ranked goals outside of candidate selection](https://github.com/rust-lang/rust/pull/119820/)
-- [Pass list of defineable opaque types into canonical queries](https://github.com/rust-lang/rust/pull/122077/)
-- [Eagerly instantiate closure/coroutine-like bounds with placeholders to deal with binders correctly](https://github.com/rust-lang/rust/pull/122267/)
-- [Use fulfillment in method probe, not evaluation](https://github.com/rust-lang/rust/pull/122317/)
-- [Make inductive cycles always ambiguous](https://github.com/rust-lang/rust/pull/122791/)
-- [Enforce closure args + return type are WF](https://github.com/rust-lang/rust/pull/123531/)
-- [Fix trait solver overflow with `non_local_definitions` lint](https://github.com/rust-lang/rust/pull/123594/)
-- [More DefineOpaqueTypes::Yes](https://github.com/rust-lang/rust/pull/123794/)
-
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