dev: code improvements and minor performance upgrades (#2201)

* dev: remove len for empty comparison

* dev: using in instead of multiple ors

* dev: assign expression to empty variables

* dev: use f-string

* dev: remove list comprehension and use generators

* dev: remove assert from paginator

* dev: use is for identity comparison with singleton

* dev: remove unnecessary else statements

* dev: fix does not exists error for both project and workspace

* dev: remove reimports

* dev: iterate a dictionary

* dev: remove unused commented code

* dev: remove redefinition

* dev: remove unused imports

* dev: remove unused imports

* dev: remove unnecessary f strings

* dev: remove unused variables

* dev: use literal structure to create the data structure

* dev: add empty lines at the end of the file

* dev: remove user middleware

* dev: remove unnecessary default None

apiserver/plane/db/models/__init__.py

@@ -27,7 +27,6 @@ from .issue import (
     IssueActivity,
     IssueProperty,
     IssueComment,
-    IssueBlocker,
     IssueLabel,
     IssueAssignee,
     Label,
@@ -79,4 +78,4 @@ from .analytic import AnalyticView
 
 from .notification import Notification
 
-from .exporter import ExporterHistory
+from .exporter import ExporterHistory

apiserver/plane/db/models/exporter.py

@@ -53,4 +53,4 @@ class ExporterHistory(BaseModel):
 
     def __str__(self):
         """Return name of the service"""
-        return f"{self.provider} <{self.workspace.name}>"
+        return f"{self.provider} <{self.workspace.name}>"

apiserver/plane/db/models/integration/__init__.py

@@ -1,3 +1,3 @@
 from .base import Integration, WorkspaceIntegration
 from .github import GithubRepository, GithubRepositorySync, GithubIssueSync, GithubCommentSync
-from .slack import SlackProjectSync
+from .slack import SlackProjectSync

apiserver/plane/db/models/integration/github.py

@@ -6,7 +6,6 @@ from django.db import models
 
 # Module imports
 from plane.db.models import ProjectBaseModel
-from plane.db.mixins import AuditModel
 
 
 class GithubRepository(ProjectBaseModel):

apiserver/plane/db/models/project.py

@@ -4,9 +4,6 @@ from uuid import uuid4
 # Django imports
 from django.db import models
 from django.conf import settings
-from django.template.defaultfilters import slugify
-from django.db.models.signals import post_save
-from django.dispatch import receiver
 from django.core.validators import MinValueValidator, MaxValueValidator
 
 # Modeule imports