Update TGB TimeDelta Constants

[Jacob-Chmura]

Purpose

In preparation for #40, I had a look at our TGB time granularities:

tgm/tgm/timedelta.py

Lines 78 to 99 in 5b4949e

	TGB_TIME_DELTAS = {
	'tgbl-wiki': TimeDeltaDG('s'),
	'tgbl-subreddit': TimeDeltaDG('r'),
	'tgbl-lastfm': TimeDeltaDG('r'),
	'tgbl-review': TimeDeltaDG('s'),
	'tgbl-coin': TimeDeltaDG('r'),
	'tgbl-flight': TimeDeltaDG('r'),
	'tgbl-comment': TimeDeltaDG('r'),
	'tgbn-trade': TimeDeltaDG('r'),
	'tgbn-genre': TimeDeltaDG('r'),
	'tgbn-reddit': TimeDeltaDG('r'),
	'tgbn-token': TimeDeltaDG('r'),
	'tkgl-polecat': TimeDeltaDG('r'),
	'tkgl-icews': TimeDeltaDG('r'),
	'tkgl-yago': TimeDeltaDG('r'),
	'tkgl-wikidata': TimeDeltaDG('r'),
	'tkgl-smallpedia': TimeDeltaDG('r'),
	'thgl-myket': TimeDeltaDG('r'),
	'thgl-github': TimeDeltaDG('r'),
	'thgl-forum': TimeDeltaDG('r'),
	'thgl-software': TimeDeltaDG('r'),
	}

These do not match the reported time granularities in the original data, which I have verified by manually loading in timestamps.

Solution

I fixed the time granularities. I also removed `'tkgl-' and 'thgl-' graphs as we don't support loading them at the moment.

Relevant Prs

Fix #65

[shenyangHuang]

looks good to me, thanks for manually verifying

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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