nix: Remove unused and outdated flake8 dependencies.

pkgs/python-packages.nix

@@ -675,19 +675,6 b''
       license = [ pkgs.lib.licenses.asl20 ];
     };
   };
-  flake8 = super.buildPythonPackage {
-    name = "flake8-2.4.1";
-    buildInputs = with self; [];
-    doCheck = false;
-    propagatedBuildInputs = with self; [pyflakes pep8 mccabe];
-    src = fetchurl {
-      url = "https://pypi.python.org/packages/8f/b5/9a73c66c7dba273bac8758398f060c008a25f3e84531063b42503b5d0a95/flake8-2.4.1.tar.gz";
-      md5 = "ed45d3db81a3b7c88bd63c6e37ca1d65";
-    };
-    meta = {
-      license = [ pkgs.lib.licenses.mit ];
-    };
-  };
   future = super.buildPythonPackage {
     name = "future-0.14.3";
     buildInputs = with self; [];
@@ -883,19 +870,6 b''
       license = [ pkgs.lib.licenses.bsdOriginal ];
     };
   };
-  mccabe = super.buildPythonPackage {
-    name = "mccabe-0.3";
-    buildInputs = with self; [];
-    doCheck = false;
-    propagatedBuildInputs = with self; [];
-    src = fetchurl {
-      url = "https://pypi.python.org/packages/c9/2e/75231479e11a906b64ac43bad9d0bb534d00080b18bdca8db9da46e1faf7/mccabe-0.3.tar.gz";
-      md5 = "81640948ff226f8c12b3277059489157";
-    };
-    meta = {
-      license = [ { fullName = "Expat license"; } pkgs.lib.licenses.mit ];
-    };
-  };
   meld3 = super.buildPythonPackage {
     name = "meld3-1.0.2";
     buildInputs = with self; [];
@@ -987,19 +961,6 b''
       license = [ { fullName = "LGPL"; } { fullName = "GNU Library or Lesser General Public License (LGPL)"; } ];
     };
   };
-  pep8 = super.buildPythonPackage {
-    name = "pep8-1.5.7";
-    buildInputs = with self; [];
-    doCheck = false;
-    propagatedBuildInputs = with self; [];
-    src = fetchurl {
-      url = "https://pypi.python.org/packages/8b/de/259f5e735897ada1683489dd514b2a1c91aaa74e5e6b68f80acf128a6368/pep8-1.5.7.tar.gz";
-      md5 = "f6adbdd69365ecca20513c709f9b7c93";
-    };
-    meta = {
-      license = [ { fullName = "Expat license"; } pkgs.lib.licenses.mit ];
-    };
-  };
   peppercorn = super.buildPythonPackage {
     name = "peppercorn-0.5";
     buildInputs = with self; [];

requirements.txt

@@ -62,7 +62,6 b' dogpile.cache==0.6.1'
 dogpile.core==0.4.1
 dulwich==0.12.0
 ecdsa==0.11
-flake8==2.4.1
 future==0.14.3
 futures==3.0.2
 gevent==1.1.1
@@ -83,7 +82,6 b' iso8601==0.1.11'
 itsdangerous==0.24
 kombu==1.5.1
 lxml==3.4.4
-mccabe==0.3
 meld3==1.0.2
 mock==1.0.1
 msgpack-python==0.4.6
@@ -91,7 +89,6 b' nose==1.3.6'
 objgraph==2.0.0
 packaging==15.2
 paramiko==1.15.1
-pep8==1.5.7
 psutil==2.2.1
 psycopg2==2.6.1
 py==1.4.29