CLN: Remove ipython 2.x compat (pandas-dev#25150)

* CLN: Remove ipython 2.x compat

* trivial change to trigger asv

* Update v0.25.0.rst

* revert whatsnew

asv_bench/benchmarks/__init__.py

@@ -0,0 +1 @@
+"""Pandas benchmarks."""

pandas/core/frame.py

@@ -18,7 +18,6 @@
 import itertools
 import sys
 import warnings
-from distutils.version import LooseVersion
 from textwrap import dedent
 
 import numpy as np
@@ -642,22 +641,6 @@ def _repr_html_(self):
 
         Mainly for IPython notebook.
         """
-        # qtconsole doesn't report its line width, and also
-        # behaves badly when outputting an HTML table
-        # that doesn't fit the window, so disable it.
-        # XXX: In IPython 3.x and above, the Qt console will not attempt to
-        # display HTML, so this check can be removed when support for
-        # IPython 2.x is no longer needed.
-        try:
-            import IPython
-        except ImportError:
-            pass
-        else:
-            if LooseVersion(IPython.__version__) < LooseVersion('3.0'):
-                if console.in_qtconsole():
-                    # 'HTML output is disabled in QtConsole'
-                    return None
-
         if self._info_repr():
             buf = StringIO(u(""))
             self.info(buf=buf)

pandas/io/formats/console.py

@@ -108,44 +108,6 @@ def check_main():
         return check_main()
 
 
-def in_qtconsole():
-    """
-    check if we're inside an IPython qtconsole
-
-    .. deprecated:: 0.14.1
-       This is no longer needed, or working, in IPython 3 and above.
-    """
-    try:
-        ip = get_ipython()  # noqa
-        front_end = (
-            ip.config.get('KernelApp', {}).get('parent_appname', "") or
-            ip.config.get('IPKernelApp', {}).get('parent_appname', ""))
-        if 'qtconsole' in front_end.lower():
-            return True
-    except NameError:
-        return False
-    return False
-
-
-def in_ipnb():
-    """
-    check if we're inside an IPython Notebook
-
-    .. deprecated:: 0.14.1
-       This is no longer needed, or working, in IPython 3 and above.
-    """
-    try:
-        ip = get_ipython()  # noqa
-        front_end = (
-            ip.config.get('KernelApp', {}).get('parent_appname', "") or
-            ip.config.get('IPKernelApp', {}).get('parent_appname', ""))
-        if 'notebook' in front_end.lower():
-            return True
-    except NameError:
-        return False
-    return False
-
-
 def in_ipython_frontend():
     """
     check if we're inside an an IPython zmq frontend