Automated Resyntax fixes

[resyntax-ci]

This is an automated change generated by Resyntax.

Pass 1

Applied 13 fixes to drracket/drracket/private/language.rkt

• Line 3, tidy-require: Keep imports in require sorted and grouped by phase, with collections before files.
• Line 289, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 352, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 609, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 715, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 749, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 911, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 935, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 974, cond-let-to-cond-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 982, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 1055, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 1068, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.
• Line 1274, make-temporary-directory-migration: Use make-temporary-directory to make directories instead of make-temporary-file.

Applied 2 fixes to drracket/setup/plt-installer-unit.rkt

• Line 2, tidy-require: Keep imports in require sorted and grouped by phase, with collections before files.
• Line 44, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.

Applied 1 fix to drracket/help/private/bug-report-controls.rkt

• Line 143, unused-definition: This definition is not used.

Applied 1 fix to drracket/scribble/tools/drracket-buttons.rkt

• Line 3, tidy-require: Keep imports in require sorted and grouped by phase, with collections before files.

Pass 2

Applied 1 fix to drracket/drracket/private/language.rkt

• Line 1091, let-to-define: Internal definitions are recommended instead of let expressions, to reduce nesting.

Summary

Fixed 18 issues in 4 files.

• Fixed 12 occurrences of let-to-define
• Fixed 3 occurrences of tidy-require
• Fixed 1 occurrence of make-temporary-directory-migration
• Fixed 1 occurrence of cond-let-to-cond-define
• Fixed 1 occurrence of unused-definition

[jackfirth]

This deletion broke the code, since this function is still used. Not sure what happened here. I've opened jackfirth/resyntax#410 for this.