Remove crash handler registration

[jwelton]

Context

Currently, the Rollbar public API doesn't support disabling registration of the crash handler. This pull request comments out where the SDK registers the crash handler, so we don't interfere with other tooling that uses this handler.

Checklist

• Change meets or does not compromise the Baseline Security Requirements

[tasos-tsolis]

How are we going to make sure that we are not going to forget in x months to check for the public API of the Rollbar SDK? Should we create a Jira ticket for reference?

[jwelton]

How are we going to make sure that we are not going to forget in x months to check for the public API of the Rollbar SDK? Should we create a Jira ticket for reference?

Ticket created here: https://transferwise.atlassian.net/browse/AMO-126