Removing testing tabs and the learn more link (#12481) #34777

Job	Run time
Check PR run / Check	2s
Setup	7s
Locales Test	7s
Build browser source	9s
Build Safari	15m 36s
Build (chrome, dist:chrome, dist-chrome.zip, dist-chrome-MV3)	10m 46s
Build (edge, dist:edge, dist-edge.zip, dist-edge)	6m 32s
Build (edge-mv3, dist:edge:mv3, dist-edge.zip, DO-NOT-USE-FOR-PROD-dist-edge-MV3)	10m 35s
Build (firefox, dist:firefox, dist-firefox.zip, dist-firefox)	6m 12s
Build (firefox-mv3, dist:firefox:mv3, dist-firefox.zip, DO-NOT-USE-FOR-PROD-dist-firefox-MV3)	10m 38s
Build (opera, dist:opera, dist-opera.zip, dist-opera)	6m 24s
Build (opera-mv3, dist:opera:mv3, dist-opera.zip, DO-NOT-USE-FOR-PROD-dist-opera-MV3)	10m 25s
Crowdin Push	45s
Check for failures	31s
	1h 18m 49s

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