fix: remove CI script and fix circular import in abs_encoder

Remove scripts/check_circular_imports.py and its Makefile references
per reviewer consensus. Move get_task import in abs_encoder.py to
function-level to break the circular import chain:
  mteb.abstasks → abstask → mteb.models → abs_encoder → get_tasks → mteb.abstasks

Author: fzoll

Makefile

@@ -12,15 +12,13 @@ lint:
 	uv run --no-sync ruff format . 			# running ruff formatting
 	uv run --no-sync ruff check . --fix --exit-non-zero-on-fix  	# running ruff linting # --exit-non-zero-on-fix is used for the pre-commit hook to work
 	uv run --no-sync typos
-	uv run --no-sync python scripts/check_circular_imports.py
 
 lint-check:
 	@echo "--- 🧹 Check is project is linted ---"
 	# Required for CI to work, otherwise it will just pass
 	uv run --no-sync ruff format . --check
 	uv run --no-sync ruff check .
 	uv run --no-sync typos --diff
-	uv run --no-sync python scripts/check_circular_imports.py
 
 test:
 	@echo "--- 🧪 Running tests ---"

mteb/models/abs_encoder.py

@@ -6,7 +6,6 @@
 from typing import TYPE_CHECKING, Any, Literal, cast, get_args, overload
 
 from mteb.abstasks.task_metadata import TaskType
-from mteb.get_tasks import get_task
 from mteb.similarity_functions import (
     cos_sim,
     dot_score,
@@ -166,6 +165,8 @@ def validate_task_to_prompt_name(
 
             if task_name not in task_types and task_name not in prompt_types:
                 try:
+                    from mteb.get_tasks import get_task
+
                     get_task(task_name=task_name)
                 except KeyError:
                     msg = f"Task name {task_name} is not valid. {valid_keys_msg}"
@@ -224,6 +225,8 @@ def get_instruction(
         if prompt:
             return prompt
 
+        from mteb.get_tasks import get_task
+
         abstask = get_task(task_name=task_metadata.name)
         return abstask.abstask_prompt