1 files changed, 0 insertions, 74 deletions
diff --git a/pygments/filter.py b/pygments/filter.py
deleted file mode 100644
index 7f81920b..00000000
--- a/pygments/filter.py
+++ /dev/null
@@ -1,74 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-    pygments.filter
-    ~~~~~~~~~~~~~~~
-
-    Module that implements the default filter.
-
-    :copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
-    :license: BSD, see LICENSE for details.
-"""
-
-
-def apply_filters(stream, filters, lexer=None):
-    """
-    Use this method to apply an iterable of filters to
-    a stream. If lexer is given it's forwarded to the
-    filter, otherwise the filter receives `None`.
-    """
-    def _apply(filter_, stream):
-        for token in filter_.filter(lexer, stream):
-            yield token
-    for filter_ in filters:
-        stream = _apply(filter_, stream)
-    return stream
-
-
-def simplefilter(f):
-    """
-    Decorator that converts a function into a filter::
-
-        @simplefilter
-        def lowercase(self, lexer, stream, options):
-            for ttype, value in stream:
-                yield ttype, value.lower()
-    """
-    return type(f.__name__, (FunctionFilter,), {
-        '__module__': getattr(f, '__module__'),
-        '__doc__': f.__doc__,
-        'function': f,
-    })
-
-
-class Filter(object):
-    """
-    Default filter. Subclass this class or use the `simplefilter`
-    decorator to create own filters.
-    """
-
-    def __init__(self, **options):
-        self.options = options
-
-    def filter(self, lexer, stream):
-        raise NotImplementedError()
-
-
-class FunctionFilter(Filter):
-    """
-    Abstract class used by `simplefilter` to create simple
-    function filters on the fly. The `simplefilter` decorator
-    automatically creates subclasses of this class for
-    functions passed to it.
-    """
-    function = None
-
-    def __init__(self, **options):
-        if not hasattr(self, 'function'):
-            raise TypeError('%r used without bound function' %
-                            self.__class__.__name__)
-        Filter.__init__(self, **options)
-
-    def filter(self, lexer, stream):
-        # pylint: disable=not-callable
-        for ttype, value in self.function(lexer, stream, self.options):
-            yield ttype, value