[Checkins] [zopefoundation/BTrees] 03eafc: Remove vestigial test_suite methods.

[Jason Madden]

  Branch: refs/heads/issue120
  Home:   https://github.com/zopefoundation/BTrees
  Commit: 03eafc7fa8a73dbd25fa78148887f59d1a7eae81
      https://github.com/zopefoundation/BTrees/commit/03eafc7fa8a73dbd25fa78148887f59d1a7eae81
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-02-17 (Mon, 17 Feb 2020)

  Changed paths:
    M .travis.yml
    M BTrees/_base.py
    M BTrees/tests/common.py
    M BTrees/tests/testBTrees.py
    M BTrees/tests/testBTreesUnicode.py
    M BTrees/tests/testConflict.py
    M BTrees/tests/test_IFBTree.py
    M BTrees/tests/test_IIBTree.py
    M BTrees/tests/test_IOBTree.py
    M BTrees/tests/test_IUBTree.py
    M BTrees/tests/test_LFBTree.py
    M BTrees/tests/test_LLBTree.py
    M BTrees/tests/test_LOBTree.py
    M BTrees/tests/test_LQBTree.py
    M BTrees/tests/test_Length.py
    M BTrees/tests/test_OIBTree.py
    M BTrees/tests/test_OLBTree.py
    M BTrees/tests/test_OOBTree.py
    M BTrees/tests/test_OQBTree.py
    M BTrees/tests/test_OUBTree.py
    M BTrees/tests/test_QFBTree.py
    M BTrees/tests/test_QLBTree.py
    M BTrees/tests/test_QOBTree.py
    M BTrees/tests/test_QQBTree.py
    M BTrees/tests/test_UFBTree.py
    M BTrees/tests/test_UIBTree.py
    M BTrees/tests/test_UOBTree.py
    M BTrees/tests/test_UUBTree.py
    M BTrees/tests/test__base.py
    M BTrees/tests/test_btreesubclass.py
    M BTrees/tests/test_check.py
    M BTrees/tests/test_fsBTree.py
    M BTrees/tests/test_utils.py

  Log Message:
  -----------
  Remove vestigial test_suite methods.

And other small tweaks to bring test coverage up. Turns out there were several test methods being needlessly skipped.