Remove string formatting deprecation warning from prompt.py and instructions.py

Author: irgolic

guardrails/prompt/instructions.py

@@ -1,6 +1,5 @@
 """Instructions to the LLM, to be passed in the prompt."""
 from string import Template
-from warnings import warn
 
 from guardrails.utils.parsing_utils import get_template_variables
 
@@ -30,12 +29,6 @@ def format(self, **kwargs):
         # Only use the keyword arguments that are present in the prompt.
         vars = get_template_variables(self.source)
         filtered_kwargs = {k: v for k, v in kwargs.items() if k in vars}
-        if len(filtered_kwargs) == 0:
-            warn(
-                "Instructions do not have any variables, "
-                "if you are migrating follow the new variable convention "
-                "documented here: https://docs.guardrailsai.com/0-2-migration/"
-            )
 
         # Return another instance of the class with the formatted prompt.
         formatted_instructions = Template(self.source).safe_substitute(

guardrails/prompt/prompt.py

@@ -1,5 +1,4 @@
 """The LLM prompt."""
-import warnings
 from string import Template
 
 from guardrails.utils.parsing_utils import get_template_variables
@@ -21,12 +20,6 @@ def format(self, **kwargs):
         # Only use the keyword arguments that are present in the prompt.
         vars = get_template_variables(self.source)
         filtered_kwargs = {k: v for k, v in kwargs.items() if k in vars}
-        if len(filtered_kwargs) == 0:
-            warnings.warn(
-                "Prompt does not have any variables, "
-                "if you are migrating follow the new variable convention "
-                "documented here: https://docs.guardrailsai.com/0-2-migration/"
-            )
 
         # Return another instance of the class with the formatted prompt.
         formatted_prompt = Template(self.source).safe_substitute(**filtered_kwargs)