Remove now unused release-it dependencies #812

Job	Run time
Legacy Mocha Tests - 16.x	36s
Ember Tests (16.x, ubuntu-latest)	1m 2s
Legacy Mocha Tests - 14.x	35s
Ember Tests (16.x, windows-latest)	2m 57s
Test Packages (16.x, ubuntu-latest)	1m 31s
lint-all-packages	41s
Test Packages (16.x, windows-latest)	3m 19s
Ember Tests (14.x, ubuntu-latest)	1m 15s
discover_matrix	35s
Test Packages (14.x, ubuntu-latest)	1m 29s
Ember Tests (14.x, windows-latest)	2m 51s
Test Packages (14.x, windows-latest)	3m 13s
ember-try for ember-cli-fastboot: ember-lts-3.16	1m 4s
ember-try for ember-cli-fastboot: ember-lts-3.20	54s
ember-try for ember-cli-fastboot: ember-lts-3.24	56s
ember-try for ember-cli-fastboot: ember-lts-3.28	54s
ember-try for ember-cli-fastboot: ember-lts-4.4	1m 5s
ember-try for ember-cli-fastboot: ember-lts-4.8	42s
ember-try for ember-cli-fastboot: ember-lts-4.12	55s
ember-try for ember-cli-fastboot: ember-lts-5.4	1m 3s
ember-try for ember-cli-fastboot: ember-release	1m 1s
ember-try for ember-cli-fastboot: ember-beta	1m 4s
ember-try for ember-cli-fastboot: ember-canary	1m 1s
ember-try for ember-cli-fastboot: embroider-safe	39s
ember-try for ember-cli-fastboot: embroider-optimized	36s
ember-try for ember-cli-fastboot: no-deprecations	54s
ember-try for ember-cli-fastboot: ember-release-no-deprecations	46s
custom-output-paths	30s
ember-cli-fastboot	38s
fastboot-config-location	31s
fastboot-express-middleware	34s
fastboot-location	35s
fastboot-shoebox-test	33s
integration-tests	1m 25s
oneerror-per-visit	59s
request-details	40s
root-url	32s
	40m 35s

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