Blocks: Improve VisualEditorBlock rendering of settings menu

[aduth]

Related: #2934

This pull request seeks to...

• Update the imported name of the BlockSettingsMenu component to match its exported name
• Remove an unhandled focus prop not managed by the BlockSettingsMenu component

Testing instructions:

Verify there are no regressions in the behavior of the block right menu, particularly for multi-selection.

[codecov]

Codecov Report

Merging #3202 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #3202   +/-   ##
=======================================
  Coverage   31.56%   31.56%           
=======================================
  Files         221      221           
  Lines        6311     6311           
  Branches     1121     1121           
=======================================
  Hits         1992     1992           
  Misses       3631     3631           
  Partials      688      688

Impacted Files	Coverage Δ
editor/modes/visual-editor/block.js	0% <0%> (ø)	⬆️

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