Revert "[Bugfix] Restrict TRTLLM attention to SM100, fixing GB300 (SM103) hang (#38730)"

This reverts commit c284a6671c.

tools/pre_commit/generate_attention_backend_docs.py

@@ -235,11 +235,10 @@ def _resolve_import_to_file(
 
 
 def _find_cc_in_function(tree: ast.AST, func_name: str) -> str | None:
-    """Find a compute capability from is_device_capability*() calls in a function.
+    """Find a compute capability from is_device_capability_family() calls in a function.
 
-    Handles two patterns:
-    - is_device_capability_family(N): "M.x" (e.g. 100 -> "10.x")
-    - is_device_capability(N): "M.m" (e.g. 100 -> "10.0")
+    Looks for the pattern: current_platform.is_device_capability_family(N)
+    and converts N (e.g. 100) to a CC string (e.g. "10.x").
     """
     for node in ast.walk(tree):
         if not isinstance(node, ast.FunctionDef) or node.name != func_name:
@@ -248,15 +247,12 @@ def _find_cc_in_function(tree: ast.AST, func_name: str) -> str | None:
             if (
                 isinstance(n, ast.Call)
                 and isinstance(n.func, ast.Attribute)
+                and n.func.attr == "is_device_capability_family"
                 and n.args
                 and isinstance(n.args[0], ast.Constant)
                 and isinstance(n.args[0].value, int)
             ):
-                val = n.args[0].value
-                if n.func.attr == "is_device_capability_family":
-                    return f"{val // 10}.x"
-                elif n.func.attr == "is_device_capability":
-                    return f"{val // 10}.{val % 10}"
+                return f"{n.args[0].value // 10}.x"
     return None