Removed unnecessary Pylint flags

- Removed `locally-disabled`:
  The flag `locally-disabled` is disabled by default, and can only
  be enabled by adding it to the `enable` section. But the flag was
  listed in the `disable` section, which is useless and only bloats
  up the Pylint configuration file.
- Other flags were removed because there are no issues with the
  code with respect to those flags.

Author: phiwuu

pylint3.cfg

@@ -1,28 +1,17 @@
 [MASTER]
 persistent=no
 disable=
- bad-indentation,
  missing-docstring,
  fixme,
- locally-disabled,
  similarities,
- too-many-ancestors,
  too-many-instance-attributes,
  too-few-public-methods,
- too-many-public-methods,
- too-many-return-statements,
  too-many-branches,
  too-many-arguments,
  too-many-locals,
  too-many-statements,
- too-many-boolean-expressions,
  too-many-nested-blocks,
- too-many-lines,
- len-as-condition,
  no-else-return,
- inconsistent-return-statements,
- wildcard-import,
- unused-wildcard-import,
  no-else-raise,
  no-else-break,
  no-else-continue,