events: remove eventtarget custom inspect branding #1768

Job	Run time
Build slim tarball	1m 31s
aarch64-darwin: with shared libraries	25m 4s
aarch64-linux: with shared libraries	25m 50s
x86_64-darwin: with shared libraries	36m 12s
x86_64-linux: with shared libraries	29m 26s
	1h 58m 3s

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