[Stale Content] Delete M-02-09 guidance file — superseded by FISMA 2014

## What needs to change
The summary file for OMB M-02-09 (Reporting Instructions for the Government Information Security Reform Act, 2002) should be removed. GISRA was superseded first by FISMA 2002 and then by the Federal Information Security Modernization Act of 2014. This memo predates both and has no current applicability.

## Where to find it
Navigate to `pages/_summaries/` and find the file linking to OMB M-02-09. Search if needed:
```
grep -r "M-02-09\|Government Information Security Reform" pages/_summaries/
```

## Before deleting
Confirm nothing else in the repo links to this file:
```
grep -r "m-02-09" pages/
```

## How to verify
Visit https://resources.data.gov/categories/guidance and confirm the M-02-09 entry no longer appears.