Remove redis

backend/app/core/config.py

@@ -1,5 +1,4 @@
 from pydantic_settings import BaseSettings
-from typing import Optional
 
 
 class Settings(BaseSettings):
@@ -36,9 +35,6 @@ class Settings(BaseSettings):
     # Public booking settings
     allow_public_booking: bool = False  # Enable/disable public flight booking
     
-    # Redis settings (for future use)
-    redis_url: Optional[str] = None
-    
     class Config:
         env_file = ".env"
         case_sensitive = False
@@ -48,4 +44,4 @@ class Settings(BaseSettings):
         return f"mysql+pymysql://{self.db_user}:{self.db_password}@{self.db_host}:{self.db_port}/{self.db_name}"
 
 
-settings = Settings()
+settings = Settings()