Remove "I have performed a self-review of my changes" from the pull request template #400

Job	Run time
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, v1.14, true, true)	1m 43s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, v1.14, true, false)	1m 25s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, v1.14, false, true)	1m 22s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, v1.14, false, false)	1m 46s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, true, true)	49s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, true, false)	53s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, false, true)	47s
Test option hexpm-mirrors with a dummy first mirror (ubuntu-22.04, 24, false, false)	43s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, v1.14, true, true)	1m 26s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, v1.14, true, false)	1m 16s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, v1.14, false, true)	1m 10s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, v1.14, false, false)	1m 23s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, true, true)	32s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, true, false)	33s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, false, true)	32s
Test option hexpm-mirrors with a dummy first mirror (windows-2022, 24, false, false)	32s
	16m 52s

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