Make inline suggestions no longer be the default

[estebank]

Make the default suggestions show the full patch output instead of trying to render inline.

Before

error: almost complete ascii range
  --> tests/ui/almost_complete_range.rs:17:17
   |
LL |         let _ = ('a') ..'z';
   |                 ^^^^^^--^^^
   |                       |
   |                       help: use an inclusive range: `..=`
   |
   = note: `-D clippy::almost-complete-range` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::almost_complete_range)]`

After

error: almost complete ascii range
  --> tests/ui/almost_complete_range.rs:17:17
   |
LL |         let _ = ('a') ..'z';
   |                 ^^^^^^^^^^^
   |
   = note: `-D clippy::almost-complete-range` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::almost_complete_range)]`
help: use an inclusive range
   |
LL |         let _ = ('a') ..='z';
   |                       ~~~

The inline suggestions output has worse readability than the "verbose" output, and it also (as evidenced in the diff of this PR) tends to hide when the suggestion span is slightly off. Backing off of the inline suggestions will also make it easier to migrate to annotate-snippets, as it will be one fewer special case to handle.