[issue19199] Remove PyThreadState.tick_counter field

[R. David Murray]

R. David Murray added the comment:

Should there be a mention in whats new in case any external tools are (still) looking at it and thinking it is meaningful?

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nosy: +nedbat, r.david.murray

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19199>
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