From 85a66298de5d25362cb5d3669306a74a76ff6a32 Mon Sep 17 00:00:00 2001
From: Simon Hawkins <simonjayhawkins@gmail.com>
Date: Mon, 21 Oct 2019 12:15:27 +0100
Subject: [PATCH] CLN: remove versionadded:: 0.19.0 and earlier

---
 pandas/_libs/tslibs/timestamps.pyx | 3 ---
 pandas/core/frame.py               | 2 --
 pandas/core/tools/datetimes.py     | 3 ---
 pandas/tseries/offsets.py          | 2 --
 4 files changed, 10 deletions(-)

diff --git a/pandas/_libs/tslibs/timestamps.pyx b/pandas/_libs/tslibs/timestamps.pyx
index c1575ce4f48b3..50a71d062c63f 100644
--- a/pandas/_libs/tslibs/timestamps.pyx
+++ b/pandas/_libs/tslibs/timestamps.pyx
@@ -194,13 +194,10 @@ class Timestamp(_Timestamp):
         valid values are 'D', 'h', 'm', 's', 'ms', 'us', and 'ns'. For
         example, 's' means seconds and 'ms' means milliseconds.
     year, month, day : int
-        .. versionadded:: 0.19.0
     hour, minute, second, microsecond : int, optional, default 0
-        .. versionadded:: 0.19.0
     nanosecond : int, optional, default 0
         .. versionadded:: 0.23.0
     tzinfo : datetime.tzinfo, optional, default None
-        .. versionadded:: 0.19.0
 
     Notes
     -----
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index c90bf4ba7151f..7f36826a893dd 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -6446,8 +6446,6 @@ def diff(self, periods=1, axis=0):
         axis : {0 or 'index', 1 or 'columns'}, default 0
             Take difference over rows (0) or columns (1).
 
-            .. versionadded:: 0.16.1.
-
         Returns
         -------
         DataFrame
diff --git a/pandas/core/tools/datetimes.py b/pandas/core/tools/datetimes.py
index 7b136fa29ecea..ea7a09881ef87 100644
--- a/pandas/core/tools/datetimes.py
+++ b/pandas/core/tools/datetimes.py
@@ -601,9 +601,6 @@ def to_datetime(
 
         Warning: yearfirst=True is not strict, but will prefer to parse
         with year first (this is a known bug, based on dateutil behavior).
-
-        .. versionadded:: 0.16.1
-
     utc : bool, default None
         Return UTC DatetimeIndex if True (converting any tz-aware
         datetime.datetime objects as well).
diff --git a/pandas/tseries/offsets.py b/pandas/tseries/offsets.py
index c0f6777fdb62b..1e3f5c1ed870e 100644
--- a/pandas/tseries/offsets.py
+++ b/pandas/tseries/offsets.py
@@ -980,8 +980,6 @@ def _repr_attrs(self):
 class BusinessHour(BusinessHourMixin, SingleConstructorOffset):
     """
     DateOffset subclass representing possibly n business hours.
-
-    .. versionadded:: 0.16.1
     """
 
     _prefix = "BH"