Add .pylintrc to disable unwanted warnings

Previously warnings from pylint where suppressed manually in the codacy
UI, however this only allows for global disables. The .pylintrc
configuration file let us ignore individual warnings that we do not care
about.

.pylintrc

@@ -0,0 +1,38 @@
+
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once). You can also use "--disable=all" to
+# disable everything first and then reenable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use "--disable=all --enable=classes
+# --disable=W".
+disable=Redefining built-in 'dir',
+        Redefining built-in 'type',
+        Redefining built-in 'open',
+        Redefining built-in 'format',
+        Redefining built-in 'zip',
+        Redefining built-in 'range',
+        Unused import small,
+        C0204 # Metaclass class method %s should have %s as first argument,
+        C0111 # Missing %s docstring,
+        C0301 # Line too long ,
+        C0304 # Final newline missing,
+        C0321 # More than one statement on a single line,
+        C0103 # Invalid name,
+        C0112 # Empty %s docstring,
+        C0326 # space,
+        W0231 # __init__ method from base class %r is not called,
+        W0312 # Found indentation with %ss instead of %ss,
+        W0212 # Access to a protected member %s of a client class,
+        W0223 # Method %r is abstract in class %r but is not overridden,
+        W0311 # Bad indentation. Found %s %s, expected %s,
+        W1111 # Assigning to function call which only returns None,
+        R0903 # Too few public methods,
+        W0201 # Attribute %r defined outside __init__,
+        R0914 # Too many local variables,
+        W0613 # Unused argument ,
+        W0211 # Static method with %r as first argument,
+        W0301 # Unnecessary semicolon

python/segyio/depth.py

@@ -1,8 +1,6 @@
 import numpy as np
 try: from future_builtins import zip
 except ImportError: pass
-
-from .tracesortingformat import TraceSortingFormat as Sorting
 from .trace import Sequence
 from .utils import castarray
 

python/segyio/tools.py

@@ -1,5 +1,4 @@
 import segyio
-from . import TraceField
 from . import TraceSortingFormat
 from . import SegySampleFormat