Remove duplicate entries from metadata.json #374

Job	Run time
prepare	2m 37s
Build (diemonic1/RSS-feed-in-whats-new)	37s
Build (ricewind012/aerothemesteam)	40s
Build (BossSloth/AugmentedSteam-Extension-Plugin)	1m 12s
Build (BossSloth/SteamHunter-plugin)	47s
Build (BambooFury/Dota-Stats)	35s
Build (alowave/millennium-faceit-stats)	42s
Build (AdamRaichu/auto-accept-custom-launch-args)	30s
Build (shdwmtr/dwmx)	37s
Build (apteryxxyz/steam-non-steam-playtimes)	33s
Build (jcdoll/hltb-millennium-plugin)	40s
Build (BossSloth/Extendium)	1m 7s
Build (TOR968/csstats-extension)	37s
Build (Leon135/cswatch-plugin)	35s
Build (TOR968/leetify-extension)	44s
Build (ricewind012/steam-change-window-params)	35s
Build (veygax/valve-internal-enabler)	35s
Build (k0d13/steam-size-on-disk)	36s
Build (luthor112/steam-librarian)	40s
Build (luthor112/steam-logo-pos)	34s
Build (luthor112/steam-easygrid)	34s
Build (BlythT/Gratitude-Millennium-Plugin)	37s
Build (ricewind012/steam-browser-history)	35s
Build (luthor112/steam-taskbar-progress)	40s
Build (apteryxxyz/steam-plugin-fullscreen-notifications-fix)	30s
Build (luthor112/steam-collections-plus)	38s
Build (BlafKing/steam-global-launch-options)	40s
Build (BossSloth/Steam-SteamDB-extension)	42s
	20m 29s

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