instead of having an openai => google translation layer, just add sister functions to the types that construct the google request just like openai's

function.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/sashabaranov/go-openai"
-	"github.com/sashabaranov/go-openai/jsonschema"
 
 	"gitea.stevedudenhoeffer.com/steve/go-llm/schema"
 )
@@ -28,9 +27,6 @@ type Function struct {
 	fn reflect.Value
 
 	paramType reflect.Type
-
-	// definition is a cache of the openaiImpl jsonschema definition
-	definition *jsonschema.Definition
 }
 
 func (f *Function) Execute(ctx *Context, input string) (any, error) {
@@ -79,14 +75,6 @@ func (f *Function) toOpenAIFunction() *openai.FunctionDefinition {
 		Parameters:  f.Parameters,
 	}
 }
-func (f *Function) toOpenAIDefinition() jsonschema.Definition {
-	if f.definition == nil {
-		def := f.Parameters.Definition()
-		f.definition = &def
-	}
-
-	return *f.definition
-}
 
 type FunctionCall struct {
 	Name      string `json:"name,omitempty"`