Remove dates present in generic entry final part

[Marinovsky]

Description

All holidays and early closes of the following entries were already in Index-usa-[*]:

• Index-usa-VIX
• Index-usa-NDX
• Index-usa-SPX

Furthermore, the dates '10/12/2026' and '11/11/2026' were already present in the bank holiday list of the generic entry of Future-cme-FTU and Future-cme-FT1

Related Issue

n/a

Motivation and Context

With this change, the MHDB will have less redundant dates

Requires Documentation Change

N/A

How Has This Been Tested?

I used the method check_disjoint_holidays_with_parent from the following python module (https://github.com/Marinovsky/LEAN-MHDB/blob/master/main.py#L523) to find and remove those redundant dates automatically.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which improves implementation)
• Performance (non-breaking change which improves performance. Please add associated performance test and results)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Non-functional change (xml comments/documentation/etc)

Checklist:

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>