Remove unnecessary extension trait
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@@ -15,8 +15,8 @@ use crate::infer::canonical::{
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use crate::infer::region_constraints::{Constraint, RegionConstraintData};
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use crate::infer::{DefineOpaqueTypes, InferCtxt, InferOk, InferResult};
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use crate::traits::query::NoSolution;
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use crate::traits::TraitEngine;
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use crate::traits::{Obligation, ObligationCause, PredicateObligation};
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use crate::traits::{TraitEngine, TraitEngineExt};
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use rustc_data_structures::captures::Captures;
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use rustc_index::Idx;
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use rustc_index::IndexVec;
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@@ -12,7 +12,7 @@ pub use SubregionOrigin::*;
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pub use ValuePairs::*;
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use crate::traits::{
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self, ObligationCause, ObligationInspector, PredicateObligations, TraitEngine, TraitEngineExt,
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self, ObligationCause, ObligationInspector, PredicateObligations, TraitEngine,
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};
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use error_reporting::TypeErrCtxt;
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use free_regions::RegionRelations;
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