chore: revert changes to internal/translator to comply with path guard

This commit reverts all modifications within internal/translator. A separate issue
will be created for the maintenance team to integrate SanitizeFunctionName into
the translators.

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

internal/translator/gemini/claude/gemini_claude_request.go

@@ -84,7 +84,7 @@ func ConvertClaudeRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 						contentJSON, _ = sjson.SetRaw(contentJSON, "parts.-1", part)
 
 					case "tool_use":
-						functionName := util.SanitizeFunctionName(contentResult.Get("name").String())
+						functionName := contentResult.Get("name").String()
 						functionArgs := contentResult.Get("input").String()
 						argsResult := gjson.Parse(functionArgs)
 						if argsResult.IsObject() && gjson.Valid(functionArgs) {
@@ -100,12 +100,11 @@ func ConvertClaudeRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 						if toolCallID == "" {
 							return true
 						}
-						rawFuncName := toolCallID
+						funcName := toolCallID
 						toolCallIDs := strings.Split(toolCallID, "-")
 						if len(toolCallIDs) > 1 {
-							rawFuncName = strings.Join(toolCallIDs[0:len(toolCallIDs)-1], "-")
+							funcName = strings.Join(toolCallIDs[0:len(toolCallIDs)-1], "-")
 						}
-						funcName := util.SanitizeFunctionName(rawFuncName)
 						responseData := contentResult.Get("content").Raw
 						part := `{"functionResponse":{"name":"","response":{"result":""}}}`
 						part, _ = sjson.Set(part, "functionResponse.name", funcName)
@@ -138,12 +137,6 @@ func ConvertClaudeRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 				tool, _ = sjson.Delete(tool, "input_examples")
 				tool, _ = sjson.Delete(tool, "type")
 				tool, _ = sjson.Delete(tool, "cache_control")
-
-				// Sanitize tool name
-				if name := gjson.Get(tool, "name"); name.Exists() {
-					tool, _ = sjson.Set(tool, "name", util.SanitizeFunctionName(name.String()))
-				}
-
 				if gjson.Valid(tool) && gjson.Parse(tool).IsObject() {
 					if !hasTools {
 						out, _ = sjson.SetRaw(out, "tools", `[{"functionDeclarations":[]}]`)