gh-115816: Generate calls to sym_new_const() etc. without _Py_uop prefix (#116077)

This was left behind by GH-115987. Basically a lot of diffs like this:
```
-            res = _Py_uop_sym_new_unknown(ctx);
+            res = sym_new_unknown(ctx);
```

1 files changed, 4 insertions, 4 deletions

diff --git a/Tools/cases_generator/optimizer_generator.py b/Tools/cases_generator/optimizer_generator.py
index e933fee..d3ce4c8 100644
--- a/Tools/cases_generator/optimizer_generator.py
+++ b/Tools/cases_generator/optimizer_generator.py
@@ -28,7 +28,7 @@ from generators_common import (
 from cwriter import CWriter
 from typing import TextIO, Iterator
 from lexer import Token
-from stack import StackOffset, Stack, SizeMismatch, UNUSED
+from stack import Stack, SizeMismatch, UNUSED
 
 DEFAULT_OUTPUT = ROOT / "Python/optimizer_cases.c.h"
 DEFAULT_ABSTRACT_INPUT = ROOT / "Python/optimizer_bytecodes.c"
@@ -87,14 +87,14 @@ def emit_default(out: CWriter, uop: Uop) -> None:
         if var.name != "unused" and not var.peek:
             if var.is_array():
                 out.emit(f"for (int _i = {var.size}; --_i >= 0;) {{\n")
-                out.emit(f"{var.name}[_i] = _Py_uop_sym_new_unknown(ctx);\n")
+                out.emit(f"{var.name}[_i] = sym_new_unknown(ctx);\n")
                 out.emit(f"if ({var.name}[_i] == NULL) goto out_of_space;\n")
                 out.emit("}\n")
             elif var.name == "null":
-                out.emit(f"{var.name} = _Py_uop_sym_new_null(ctx);\n")
+                out.emit(f"{var.name} = sym_new_null(ctx);\n")
                 out.emit(f"if ({var.name} == NULL) goto out_of_space;\n")
             else:
-                out.emit(f"{var.name} = _Py_uop_sym_new_unknown(ctx);\n")
+                out.emit(f"{var.name} = sym_new_unknown(ctx);\n")
                 out.emit(f"if ({var.name} == NULL) goto out_of_space;\n")