This commit does the following: - Replaces use of rustc_type_ir by rustc_middle - Removes the rustc_type_ir dependency - The DelayedSet type is exposed by rustc_middle so everything can be accessed through rustc_middle in a coherent manner.
This commit does the following: - Replaces use of rustc_type_ir by rustc_middle - Removes the rustc_type_ir dependency - The DelayedSet type is exposed by rustc_middle so everything can be accessed through rustc_middle in a coherent manner.