remove to_epoc

[jsvd]

to_epoc converts "event.timestamp" to a unix timestamp, but if the argument is not a Time object it firsts tries Time.parse(arg)

However, event.timestamp should always return a LogStash::Timestamp object, so the method will generate an exception since passing a Logstash::Timestamp to Time.parse coerces it to a string that Time.parse can't handle.

Fixes #3

[ph]

LGTM

[elasticsearch-bot]

Merged sucessfully into master!