This CL removes all debugging capabilities from the API provided by
WasmDebugInfo:
- setting and removing breakpoints
- stepping
- stack inspection

The WasmDebugInfo is still kept, since it's used from tests to
instantiate the interpreter.

R=thibaudm@chromium.org, bmeurer@chromium.org

Bug: v8:10389
Change-Id: I297bfc8df2104dae8b9f9f9b13078026c47698da
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2164791Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67418}