[AUDIT] Run knip over twenty-server (#21159)

# Introduction
Run [knip](https://knip.dev/) over twenty-server
Used config:
```json
{
  "$schema": "https://unpkg.com/knip@5/schema.json",
  "workspaces": {
    "packages/twenty-server": {
      "entry": [
        "src/main.ts",
        "src/command/command.ts",
        "src/queue-worker/queue-worker.ts",
        "src/database/scripts/setup-db.ts",
        "src/database/scripts/truncate-db.ts",
        "src/database/clickHouse/migrations/run-migrations.ts",
        "src/database/clickHouse/seeds/run-seeds.ts",
        "src/instrument.ts",
        "lingui.config.ts",
        "test/integration/graphql/codegen/index.ts",
        "test/integration/utils/setup-test.ts",
        "test/integration/utils/teardown-test.ts",
        "scripts/**/*.ts",
        "**/*.spec.ts",
        "**/*.integration-spec.ts"
      ],
      "project": ["src/**/*.ts", "test/**/*.ts", "scripts/**/*.ts"],
      "ignore": [
        "src/database/typeorm/**/migrations/**",
        "src/database/typeorm/**/*.entity.ts",
        "**/*.workspace-entity.ts",
        "**/logic-function-resource/constants/seed-project/**"
      ],
      "ignoreDependencies": ["@types/psl", "@types/aws-lambda"],
      "ignoreBinaries": ["nest", "lingui", "typeorm"]
    }
  }
}
```

packages/twenty-server/src/engine/api/common/common-args-processors/group-by-arg-processor/types/composite-field-group-by-definition.type.ts

@@ -1 +0,0 @@
-export type CompositeFieldGroupByDefinition = Record<string, boolean>;

packages/twenty-server/src/engine/api/common/common-args-processors/group-by-arg-processor/types/field-group-by-definition.type.ts

@@ -1,8 +0,0 @@
-import { type CompositeFieldGroupByDefinition } from 'src/engine/api/common/common-args-processors/group-by-arg-processor/types/composite-field-group-by-definition.type';
-import { type DateFieldGroupByDefinition } from 'src/engine/api/common/common-args-processors/group-by-arg-processor/types/date-field-group-by-definition.type';
-
-export type FieldGroupByDefinition =
-  | boolean
-  | CompositeFieldGroupByDefinition
-  | DateFieldGroupByDefinition
-  | undefined;

packages/twenty-server/src/engine/api/common/common-select-fields/utils/get-should-recurse-into-relation.ts

@@ -1,31 +0,0 @@
-import { isDefined } from 'twenty-shared/utils';
-
-import { MAX_DEPTH } from 'src/engine/api/rest/input-request-parsers/constants/max-depth.constant';
-import { type Depth } from 'src/engine/api/rest/input-request-parsers/types/depth.type';
-import { type FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
-
-export const getShouldRecurseIntoRelation = ({
-  depth,
-  flatField,
-}: {
-  depth: Depth | undefined;
-  flatField: FlatFieldMetadata;
-}): boolean => {
-  const flatFieldIsJoinColumn =
-    isDefined(flatField.settings) &&
-    'junctionTargetFieldId' in flatField.settings;
-
-  // TODO: refactor this when we remove hard-coded activity relations
-  const flatFieldIsActivityTarget =
-    flatField.name === 'noteTargets' || flatField.name === 'taskTargets';
-
-  const shouldGoOneLevelDeeper =
-    depth === MAX_DEPTH && isDefined(flatField.relationTargetObjectMetadataId);
-
-  const shouldRecurseIntoRelation =
-    shouldGoOneLevelDeeper ||
-    flatFieldIsActivityTarget ||
-    flatFieldIsJoinColumn;
-
-  return shouldRecurseIntoRelation;
-};