Remove incorrect ConstraintPrimal method in favor of fallback

Author: odow

src/MOI_wrapper.jl

@@ -566,19 +566,6 @@ function MOI.get(
     return vectorize_block(model.X, block(model, ci), S)
 end
 
-function MOI.get(
-    model::Optimizer,
-    attr::MOI.ConstraintPrimal,
-    ci::MOI.ConstraintIndex{
-        MOI.ScalarAffineFunction{Cdouble},
-        MOI.EqualTo{Cdouble},
-    },
-)
-    MOI.check_result_index_bounds(model, attr)
-    # TODO(odow): this isn't correct. In Ax = b, it should be Ax, not b.
-    return model.b[ci.value]
-end
-
 function MOI.get(
     model::Optimizer,
     attr::MOI.ConstraintDual,