Bless output of test nll/loan_ends_mid_block_pair.rs for Polonius, again

Fixing assignments to projections made the Polonius output exactly the same as the NLL one.

src/test/ui/nll/loan_ends_mid_block_pair.polonius.stderr

@@ -10,29 +10,6 @@ LL |     data.0 = 'e';
 LL |     capitalize(c);
    |                - borrow later used here
 
-error[E0506]: cannot assign to `data.0` because it is borrowed
-  --> $DIR/loan_ends_mid_block_pair.rs:14:5
-   |
-LL |     let c = &mut data.0;
-   |             ----------- borrow of `data.0` occurs here
-...
-LL |     data.0 = 'f';
-   |     ^^^^^^^^^^^^ assignment to borrowed `data.0` occurs here
-LL |     data.0 = 'g';
-LL |     capitalize(c);
-   |                - borrow later used here
-
-error[E0506]: cannot assign to `data.0` because it is borrowed
-  --> $DIR/loan_ends_mid_block_pair.rs:15:5
-   |
-LL |     let c = &mut data.0;
-   |             ----------- borrow of `data.0` occurs here
-...
-LL |     data.0 = 'g';
-   |     ^^^^^^^^^^^^ assignment to borrowed `data.0` occurs here
-LL |     capitalize(c);
-   |                - borrow later used here
-
-error: aborting due to 3 previous errors
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0506`.