fix other issues spotted by pyflakes.

gunicorn/arbiter.py

@@ -142,7 +142,7 @@ class Arbiter(object):
             except KeyboardInterrupt:
                 self.stop(False)
                 sys.exit(-1)
-            except Exception, e:
+            except Exception:
                 self.log.exception("Unhandled exception in main loop.")
                 self.stop(False)
                 sys.exit(-1)

gunicorn/http/parser.py

@@ -138,7 +138,6 @@ class HttpParser(object):
         return False
         
     def read_chunk(self, data):
-        dlen = len(data)
         if not self.start_offset:
             i = data.find("\r\n")
             if i != -1:

gunicorn/http/request.py

@@ -58,7 +58,6 @@ class HttpRequest(object):
     def read(self):
         environ = {}
         headers = []
-        remain = CHUNK_SIZE
         buf = ""
         buf = read_partial(self.socket, CHUNK_SIZE)
         i = self.parser.filter_headers(headers, buf)

gunicorn/http/tee.py

@@ -93,7 +93,8 @@ class TeeInput(object):
                     return self.temp.readline(size)
         return line
        
-    def readlines(self, sizehints=0):
+    def readlines(self, sizehint=0):
+        total = 0
         lines = []
         line = self.readline()
         while line: