Revert "Support type inspection on unrealized LazyConstantVariables (#169513)" (#173496)

Summary:
Manual revert for pytorch/pytorch#169513 since the auto revert didn't work.

This reverts commit a90b73c9b9715aae901afc12ca1955b9b6c80695.

X-link: pytorch/pytorch#173496
Approved by: https://github.com/zou3519

Reviewed By: wdvr

Differential Revision: D91627940

fbshipit-source-id: 1028c6950a8232c19121d7f8bfe15cc7b60a04d1

Author: williamwen42

userbenchmark/dynamo/dynamobench/_dynamo/utils.py

@@ -2616,25 +2616,21 @@ def specialize_symnode(arg: Any) -> Any:
     from .variables import ConstantVariable, LazyVariableTracker, SymNodeVariable
 
     # Guard and specialize
-    if isinstance(arg, LazyVariableTracker):
-        if not arg.is_realized():
-            # Find if the arg would be realized as SymNodeVariable later on. If yes,
-            # realize it and specialize. Else return the arg.
-
-            source = arg.original_source()
-            value = arg.original_value()
-
-            is_symnode_vt = is_torch_sym(value) or (
-                not config.specialize_int
-                and type(value) is int
-                and not is_int_specialization_case(value, source)
-            )
+    if isinstance(arg, LazyVariableTracker) and not arg.is_realized():
+        # Find if the arg would be realized as SymNodeVariable later on. If yes,
+        # realize it and specialize. Else return the arg.
+
+        source = arg.original_source()
+        value = arg.original_value()
 
-            if not is_symnode_vt:
-                return arg
+        is_symnode_vt = is_torch_sym(value) or (
+            not config.specialize_int
+            and type(value) is int
+            and not is_int_specialization_case(value, source)
+        )
 
-        # Realize to get the underlying variable (handles both realized and unrealized)
-        arg = arg.realize()
+        if not is_symnode_vt:
+            return arg
 
     if isinstance(arg, SymNodeVariable):
         return ConstantVariable.create(arg.evaluate_expr())