gh-104780: Remove 2to3 program and lib2to3 module (#104781)

* Remove the Tools/scripts/2to3 script.
* Remove the Lib/test/test_lib2to3/ directory.
* Doc/tools/extensions/pyspecific.py: remove the "2to3fixer" object
  type.
* Makefile and PC/layout/main.py no longer compile lib2to3 grammar
  files.
* Update Makefile for 2to3 removal.

1 files changed, 0 insertions, 43 deletions

diff --git a/Lib/lib2to3/fixes/fix_itertools.py b/Lib/lib2to3/fixes/fix_itertools.py
deleted file mode 100644
index 8e78d6c..0000000
--- a/Lib/lib2to3/fixes/fix_itertools.py
+++ /dev/null
@@ -1,43 +0,0 @@
-""" Fixer for itertools.(imap|ifilter|izip) --> (map|filter|zip) and
-    itertools.ifilterfalse --> itertools.filterfalse (bugs 2360-2363)
-
-    imports from itertools are fixed in fix_itertools_import.py
-
-    If itertools is imported as something else (ie: import itertools as it;
-    it.izip(spam, eggs)) method calls will not get fixed.
-    """
-
-# Local imports
-from .. import fixer_base
-from ..fixer_util import Name
-
-class FixItertools(fixer_base.BaseFix):
-    BM_compatible = True
-    it_funcs = "('imap'|'ifilter'|'izip'|'izip_longest'|'ifilterfalse')"
-    PATTERN = """
-              power< it='itertools'
-                  trailer<
-                     dot='.' func=%(it_funcs)s > trailer< '(' [any] ')' > >
-              |
-              power< func=%(it_funcs)s trailer< '(' [any] ')' > >
-              """ %(locals())
-
-    # Needs to be run after fix_(map|zip|filter)
-    run_order = 6
-
-    def transform(self, node, results):
-        prefix = None
-        func = results['func'][0]
-        if ('it' in results and
-            func.value not in ('ifilterfalse', 'izip_longest')):
-            dot, it = (results['dot'], results['it'])
-            # Remove the 'itertools'
-            prefix = it.prefix
-            it.remove()
-            # Replace the node which contains ('.', 'function') with the
-            # function (to be consistent with the second part of the pattern)
-            dot.remove()
-            func.parent.replace(func)
-
-        prefix = prefix or func.prefix
-        func.replace(Name(func.value[1:], prefix=prefix))