Remove unused variables and imports

pipenv/cli.py:24:1: F401 '.utils.recase_file' imported but unused
pipenv/cli.py:466:5: F841 local variable 'p' is assigned to but never used
pipenv/utils.py:13:5: F401 'html.parser.HTMLParser' imported but unused
pipenv/utils.py:246:25: F841 local variable 'e' is assigned to but never used
tests/test_pipenv.py:9:1: F401 'pipenv.cli.which_pip' imported but unused

pipenv/cli.py

@@ -22,7 +22,7 @@ from requests.packages.urllib3.exceptions import InsecureRequestWarning
 
 from .project import Project
 from .utils import (convert_deps_from_pip, convert_deps_to_pip, is_required_version,
-    proper_case, pep423_name, split_vcs, recase_file)
+    proper_case, pep423_name, split_vcs)
 from .__version__ import __version__
 from . import pep508checker, progress
 from .environments import PIPENV_COLORBLIND, PIPENV_NOSPIN, PIPENV_SHELL_COMPAT, PIPENV_VENV_IN_PROJECT
@@ -463,7 +463,7 @@ def do_lock(no_hashes=True):
         names_map = do_download_dependencies(dev=True, only=True, bare=True)
 
     # Load the Pipfile and generate a lockfile.
-    p = project._pipfile
+    project._pipfile
     lockfile = project._lockfile
 
     # Pip freeze development dependencies.

pipenv/utils.py

@@ -7,11 +7,6 @@ import requests
 import requirements
 import six
 
-try:
-    from HTMLParser import HTMLParser
-except ImportError:
-    from html.parser import HTMLParser
-
 # List of version control systems we support.
 VCS_LIST = ('git', 'svn', 'hg', 'bzr')
 
@@ -243,7 +238,7 @@ def walk_up(bottom):
     # get files in current dir
     try:
         names = os.listdir(bottom)
-    except Exception as e:
+    except Exception:
         return
 
     dirs, nondirs = [], []

tests/test_pipenv.py

@@ -7,7 +7,7 @@ import delegator
 import toml
 
 from pipenv.cli import (activate_virtualenv, ensure_proper_casing,
-    parse_download_fname, parse_install_output, pip_install, pip_download, which_pip)
+    parse_download_fname, parse_install_output, pip_install, pip_download)
 from pipenv.project import Project