Revert "feat: email register refactor" (#25367)

api/configs/feature/__init__.py

@@ -31,12 +31,6 @@ class SecurityConfig(BaseSettings):
         description="Duration in minutes for which a password reset token remains valid",
         default=5,
     )
-
-    EMAIL_REGISTER_TOKEN_EXPIRY_MINUTES: PositiveInt = Field(
-        description="Duration in minutes for which a email register token remains valid",
-        default=5,
-    )
-
     CHANGE_EMAIL_TOKEN_EXPIRY_MINUTES: PositiveInt = Field(
         description="Duration in minutes for which a change email token remains valid",
         default=5,
@@ -645,11 +639,6 @@ class AuthConfig(BaseSettings):
         default=86400,
     )
 
-    EMAIL_REGISTER_LOCKOUT_DURATION: PositiveInt = Field(
-        description="Time (in seconds) a user must wait before retrying email register after exceeding the rate limit.",
-        default=86400,
-    )
-
 
 class ModerationConfig(BaseSettings):
     """