Delete W601 -> W604 warnings

Author: dannysepler

README.rst

@@ -65,11 +65,9 @@ Example usage and output
   optparse.py:69:11: E401 multiple imports on one line
   optparse.py:77:1: E302 expected 2 blank lines, found 1
   optparse.py:88:5: E301 expected 1 blank line, found 0
-  optparse.py:222:34: W602 deprecated form of raising exception
   optparse.py:347:31: E211 whitespace before '('
   optparse.py:357:17: E201 whitespace after '{'
   optparse.py:472:29: E221 multiple spaces before operator
-  optparse.py:544:21: W601 .has_key() is deprecated, use 'in'
 
 You can also make ``pycodestyle.py`` show the source code for each error, and
 even the relevant text from PEP 8::
@@ -97,8 +95,6 @@ Or you can display how often each error was found::
   165     E303 too many blank lines (4)
   325     E401 multiple imports on one line
   3615    E501 line too long (82 characters)
-  612     W601 .has_key() is deprecated, use 'in'
-  1188    W602 deprecated form of raising exception
 
 Links
 -----

docs/intro.rst

@@ -71,11 +71,9 @@ Example usage and output
   optparse.py:69:11: E401 multiple imports on one line
   optparse.py:77:1: E302 expected 2 blank lines, found 1
   optparse.py:88:5: E301 expected 1 blank line, found 0
-  optparse.py:222:34: W602 deprecated form of raising exception
   optparse.py:347:31: E211 whitespace before '('
   optparse.py:357:17: E201 whitespace after '{'
   optparse.py:472:29: E221 multiple spaces before operator
-  optparse.py:544:21: W601 .has_key() is deprecated, use 'in'
 
 You can also make ``pycodestyle.py`` show the source code for each error, and
 even the relevant text from PEP 8::
@@ -103,8 +101,6 @@ Or you can display how often each error was found::
   165     E303 too many blank lines (4)
   325     E401 multiple imports on one line
   3615    E501 line too long (82 characters)
-  612     W601 .has_key() is deprecated, use 'in'
-  1188    W602 deprecated form of raising exception
 
 You can also make ``pycodestyle.py`` show the error text in different formats by
 using ``--format`` having options default/pylint/custom::
@@ -415,14 +411,6 @@ This is the current list of error and warning codes:
 +------------+----------------------------------------------------------------------+
 | **W6**     | *Deprecation warning*                                                |
 +------------+----------------------------------------------------------------------+
-| W601       | .has_key() is deprecated, use 'in'                                   |
-+------------+----------------------------------------------------------------------+
-| W602       | deprecated form of raising exception                                 |
-+------------+----------------------------------------------------------------------+
-| W603       | '<>' is deprecated, use '!='                                         |
-+------------+----------------------------------------------------------------------+
-| W604       | backticks are deprecated, use 'repr()'                               |
-+------------+----------------------------------------------------------------------+
 | W605       | invalid escape sequence '\x'                                         |
 +------------+----------------------------------------------------------------------+
 | W606       | 'async' and 'await' are reserved keywords starting with Python 3.7   |

pycodestyle.py

@@ -1563,59 +1563,6 @@ def ambiguous_identifier(logical_line, tokens):
         prev_start = start
 
 
-@register_check
-def python_3000_has_key(logical_line, noqa):
-    r"""The {}.has_key() method is removed in Python 3: use the 'in'
-    operator.
-
-    Okay: if "alph" in d:\n    print d["alph"]
-    W601: assert d.has_key('alph')
-    """
-    pos = logical_line.find('.has_key(')
-    if pos > -1 and not noqa:
-        yield pos, "W601 .has_key() is deprecated, use 'in'"
-
-
-@register_check
-def python_3000_raise_comma(logical_line):
-    r"""When raising an exception, use "raise ValueError('message')".
-
-    The older form is removed in Python 3.
-
-    Okay: raise DummyError("Message")
-    W602: raise DummyError, "Message"
-    """
-    match = RAISE_COMMA_REGEX.match(logical_line)
-    if match and not RERAISE_COMMA_REGEX.match(logical_line):
-        yield match.end() - 1, "W602 deprecated form of raising exception"
-
-
-@register_check
-def python_3000_not_equal(logical_line):
-    r"""New code should always use != instead of <>.
-
-    The older syntax is removed in Python 3.
-
-    Okay: if a != 'no':
-    W603: if a <> 'no':
-    """
-    pos = logical_line.find('<>')
-    if pos > -1:
-        yield pos, "W603 '<>' is deprecated, use '!='"
-
-
-@register_check
-def python_3000_backticks(logical_line):
-    r"""Use repr() instead of backticks in Python 3.
-
-    Okay: val = repr(1 + 2)
-    W604: val = `1 + 2`
-    """
-    pos = logical_line.find('`')
-    if pos > -1:
-        yield pos, "W604 backticks are deprecated, use 'repr()'"
-
-
 @register_check
 def python_3000_invalid_escape_sequence(logical_line, tokens, noqa):
     r"""Invalid escape sequences are deprecated in Python 3.6.

testsuite/W60.py

@@ -1,18 +1,3 @@
-#: W601
-if a.has_key("b"):
-    print a
-#: W602
-raise DummyError, "Message"
-#: W602
-raise ValueError, "hello %s %s" % (1, 2)
-#: Okay
-raise type_, val, tb
-raise Exception, Exception("f"), t
-#: W603
-if x <> 0:
-    x = 0
-#: W604
-val = `1 + 2`
 #: W605:1:10
 regex = '\.png$'
 #: W605:2:1