Remove Unused Imports

[danyeaw]

Signed-off-by: Dan Yeaw dan@yeaw.me

This PR removes unused imports and enables the unused import check with flake8.

PR Checklist

Please check if your PR fulfills the following requirements:

• I have read, and am following the Contributer guide
• I have read and understand the Code of Conduct

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Documentation content changes

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[sourcery-ai]

Sourcery Code Quality Report (beta)

Merging this PR leaves code quality unchanged.

	Before	After	Change
Quality	8.95	8.95	0.0
Complexity	1.33	1.33	0.0
Method Length	39.26	39.12	-0.13
Lines	4670	4634	-36

Changed files	Quality Before	Quality After	Quality Change
gaphor/SysML/modelinglanguage.py	9.71	9.72	0.01 ⬆️
gaphor/SysML/blocks/block.py	8.24	8.23	-0.0
gaphor/SysML/blocks/connectors.py	9.34	9.34	0.0
gaphor/SysML/blocks/proxyport.py	9.17	9.17	0.0
gaphor/SysML/requirements/connectors.py	9.31	9.32	0.01 ⬆️
gaphor/SysML/requirements/requirement.py	7.68	7.68	-0.01 ⬇️
gaphor/SysML/tests/fixtures.py	9.56	9.56	0.0
gaphor/UML/iconname.py	9.51	9.52	0.01 ⬆️
gaphor/UML/umloverrides.py	9.2	9.2	0.0
gaphor/UML/classes/association.py	8.71	8.71	0.0
gaphor/UML/classes/tests/test_interfaceconnect.py	8.97	8.98	0.01 ⬆️
gaphor/UML/components/artifact.py	8.26	8.26	0.0
gaphor/UML/interactions/tests/test_executionspecification.py	8.84	8.85	0.0
gaphor/codegen/tests/test_profile_coder.py	9.0	9.0	0.0
gaphor/core/eventmanager.py	9.51	9.52	0.01 ⬆️
gaphor/core/modeling/elementdispatcher.py	8.11	8.12	0.0
gaphor/core/modeling/listmixins.py	9.23	9.23	0.0
gaphor/core/modeling/presentation.py	9.53	9.54	0.0
gaphor/core/styling/tests/test_css.py	9.46	9.47	0.01 ⬆️
gaphor/diagram/diagramtoolbox.py	8.66	8.71	0.05 ⬆️
gaphor/diagram/presentation.py	8.91	8.92	0.0
gaphor/diagram/propertypages.py	9.28	9.28	0.0
gaphor/diagram/shapes.py	8.74	8.75	0.01 ⬆️
gaphor/diagram/general/simpleitem.py	9.12	9.12	0.01 ⬆️
gaphor/diagram/tests/test_presentation.py	8.98	8.98	0.0
gaphor/diagram/tests/test_style.py	9.16	9.16	0.01 ⬆️
gaphor/ui/elementeditor.py	9.04	9.04	0.0
gaphor/ui/namespace.py	8.2	8.2	0.0
tests/test_undo.py	9.04	9.06	0.02 ⬆️

Here are some functions in these files that still need a tune-up:

File	Function	Quality	Recommendation
gaphor/UML/classes/association.py	AssociationEnd.post_update	3.72	Split out functionality
gaphor/ui/namespace.py	Namespace.construct	4.3	Split out functionality
gaphor/UML/classes/association.py	AssociationItem.post_update	4.72	Split out functionality
gaphor/ui/namespace.py	NamespaceView.on_drag_data_received	4.75	Split out functionality
gaphor/SysML/blocks/block.py	BlockItem.update_shapes	5.62	Split out functionality

Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Let us know what you think of it via email or our Gitter!

[amolenaar]

Sweet!