[exception-reporting] Remove core package

[confused-Techie]

This is a core package inherited from the Atom days. Back in #40 I removed all functionality related to telemetry and remote crash reports.

At the time I left the exception-reporting package around under the idea we could always try to repurpose it for remote logging capabilities or something. But considering that hasn't been attempted or needed for the last 4 years, I think we are good to just delete this, which also removes the concern that a keen-eyed user may have that we are collecting telemetry without disclosing it.

Resolves #1013

[DeeDeeG]

Okie dokie.

As you say, if in all of these ~4 years we have yet to circle back to reusing this package for anything, then yep. Probably fine to get rid of this code.

[DeeDeeG]

FWIW, I don't think any of these need anything, but just mentioning I have looked through all of these other hits for the package name in the repo:

% git grep exception-reporting
CHANGELOG.md:- Removed:  `fs-plus` from `exception-reporting` [@Sertonix](https://github.com/pulsar-edit/pulsar/pull/118)
docs/build-instructions/build-status.md:> - [exception-reporting](https://github.com/atom/atom/tree/master/packages/exception-reporting)
docs/build-instructions/build-status.md:| [Exception Reporting](https://github.com/atom/atom/tree/master/packages/exception-reporting) |  | [![Dependency Status](https://david-dm.org/atom/exception-reporting.svg)](https://david-dm.org/atom/exception-reporting) |
docs/rfcs/003-consolidate-core-packages.md:| **[exception-reporting]** | 5 | 0 | 0 | 2/6/18 |
docs/rfcs/003-consolidate-core-packages.md:[exception-reporting]: https://github.com/atom/exception-reporting
script/electron-builder.js:    "!**/{link,grammar-selector,json-schema-traverse,exception-reporting,one-light-ui,autoflow,about,go-to-line,sylvester,apparatus}/spec",

• The electron-builder thing is just a path search pattern, of files to exclude from our build assets, so it doesn't hurt if it doesn't hit. It is extraneous and could be removed, but no harm if not removed IMO.
• The whole file of docs/build-instructions/build-status.md seems probably wholly obsolete as documentation :| Untouched since Atom days, pretty much.
• CHANGELOG.md and docs/rfcs/003-consolidate-core-packages.md contain historical content that reflects its time of authorship, and as such doesn't need revising.

[confused-Techie]

@DeeDeeG Thanks for the approval! I could certainly see us removing exception-reporting from the electron-builder script, so I'll make sure to update when I get the time