PoolAllocator: Remove key constructor argument from PoolAllocator

transformations/tests/test_pool_allocator.py

@@ -518,7 +518,7 @@ def test_pool_allocator_temporaries_kernel_sequence(frontend, block_dim, directi
         for item in SFilter(scheduler.sgraph, item_filter=ProcedureItem):
             normalize_range_indexing(item.ir)
 
-    transformation = TemporariesPoolAllocatorTransformation(block_dim=block_dim, directive=directive, key='some_key')
+    transformation = TemporariesPoolAllocatorTransformation(block_dim=block_dim, directive=directive)
     scheduler.process(transformation=transformation)
     kernel_item = scheduler['kernel_mod#kernel']
     kernel2_item = scheduler['kernel_mod#kernel2']
@@ -537,7 +537,6 @@ def test_pool_allocator_temporaries_kernel_sequence(frontend, block_dim, directi
     tsize_int = f'max(c_sizeof(int(1, kind={kind_int})), 8)'
     tsize_log = f'max(c_sizeof(logical(true, kind={kind_log})), 8)'
 
-    assert transformation._key == 'some_key'
     assert transformation._key in kernel_item.trafo_data
     exp_stack_size = f'{tsize_real}*klon + {tsize_real}*klev*klon + 2*{tsize_int}*klon + {tsize_log}*klev'
     assert kernel_item.trafo_data[transformation._key]['stack_size'] == exp_stack_size

transformations/transformations/pool_allocator.py

@@ -93,8 +93,6 @@ class TemporariesPoolAllocatorTransformation(Transformation):
     check_bounds : bool, optional
         Insert bounds-checks in the kernel to make sure the allocated stack size is not
         exceeded (default: `True`)
-    key : str, optional
-        Overwrite the key that is used to store analysis results in ``trafo_data``.
     """
 
     _key = 'TemporariesPoolAllocatorTransformation'
@@ -108,7 +106,7 @@ def __init__(
             self, block_dim, stack_ptr_name='L', stack_end_name='U', stack_size_name='ISTSZ',
             stack_storage_name='ZSTACK', stack_argument_name='YDSTACK', stack_local_var_name='YLSTACK',
             local_ptr_var_name_pattern='IP_{name}', stack_int_type_kind=IntLiteral(8), directive=None,
-            check_bounds=True, key=None
+            check_bounds=True,
     ):
         self.block_dim = block_dim
         self.stack_ptr_name = stack_ptr_name
@@ -126,9 +124,6 @@ def __init__(
             raise ValueError(f'"stack_ptr_name": "{self.stack_ptr_name}" and '
                 f'"stack_end_name": "{self.stack_end_name}" must be different!')
 
-        if key:
-            self._key = key
-
     def transform_subroutine(self, routine, **kwargs):
 
         role = kwargs['role']