diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index c2fd2b74caa7f8..4a5abf62768155 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -446,9 +446,6 @@ instance of the :class:`bytes` type instead of the :class:`str` type. They
may only contain ASCII characters; bytes with a numeric value of 128 or greater
must be expressed with escapes.
-As of Python 3.3 it is possible again to prefix string literals with a
-``u`` prefix to simplify maintenance of dual 2.x and 3.x codebases.
-
Both string and bytes literals may optionally be prefixed with a letter ``'r'``
or ``'R'``; such strings are called :dfn:`raw strings` and treat backslashes as
literal characters. As a result, in string literals, ``'\U'`` and ``'\u'``
@@ -799,10 +796,6 @@ Some examples of floating point literals::
3.14 10. .001 1e100 3.14e-10 0e0 3.14_15_93
-Note that numeric literals do not include a sign; a phrase like ``-1`` is
-actually an expression composed of the unary operator ``-`` and the literal
-``1``.
-
.. versionchanged:: 3.6
Underscores are now allowed for grouping purposes in literals.
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