Remove Pharo 10 from #metacelloPlatformAttributes

[theseion]

Fixes #12132.

[MarcusDenker]

Full image Build fails with

+ /builds/workspace/est_and_branch_Pipeline_PR-12141/64/bootstrap-downloads/vmtarget/pharo --headless Pharo11.0-PR-metacello-64bit-3e42b30.image --no-default-preferences eval --save 'Metacello new baseline: '\''Tonel'\'';repository: '\''github://pharo-vcs/tonel:v1.0.18'\'';onWarning: [ :e | Error signal: e messageText in: e signalerContext ]; load: '\''core'\'''
MetacelloNotification: ...RETRY->BaselineOfTonel
MetacelloNotification: ...RETRY->BaselineOfTonel
#restart was sent to nil
UndefinedObject(Object)>>doesNotUnderstand: #restart
UndefinedObject>>doesNotUnderstand: #restart
NameLookupFailure(Exception)>>retry

[theseion]

Updated TaskIt Baseline. I've opened an issue there, as there's some stuff that should be synchronised: pharo-contributions/taskit#115.

[MarcusDenker]

Thanks!