Remove trace_printk decorator function

Author: varun-r-mallya

pythonbpf/decorators.py

@@ -6,7 +6,3 @@ def wrapper(fn):
 
 def license(license_type: str):
     return license_type
-
-def trace_printk(msg: str):
-    # placeholder — real version lowers to IR later
-    print(f"[trace_printk] {msg}")