[issue20577] IDLE: Remove FormatParagraph's width setting from config dialog

[Terry J. Reedy]

Terry J. Reedy added the comment:

Ned's comments on #20580,  msg222714,  reminded me that while each idlelib has its own set of default config files, one set of user files is shared across all installed versions of idle. So we have to be careful about what we do. With this patch, 3.4.2, for instance, could not read the user setting set with 3.4.1. And a setting written by 3.4.2 could not be read by 2.7.8. While I think that is tolerable, let's hold off on this until it is both needed and tested a bit more.

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<http://bugs.python.org/issue20577>
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