Revert "Sécurité : validation EmailStr + tests complets 57/57 + RGPD"

This reverts commit 4080a308ea.

database/database.py

@@ -1,19 +0,0 @@
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker, declarative_base
-import os
-
-DB_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)), "regwatch.db")
-DATABASE_URL = f"sqlite:///{DB_PATH}"
-
-engine = create_engine(
-    DATABASE_URL,
-    connect_args={"check_same_thread": False}
-)
-
-SessionLocal = sessionmaker(
-    autocommit=False,
-    autoflush=False,
-    bind=engine
-)
-
-Base = declarative_base()