Update T1564.004 test 3 Create ADS command prompt (#1198)

* Update T1564.004 test 3

* ignore errors when running cleanup multiple times

Co-authored-by: Carrie Roberts <clr2of8@gmail.com>

atomics/T1564.004/T1564.004.yaml

@@ -73,17 +73,9 @@ atomic_tests:
       type: string
       default: '%temp%\T1564.004_has_ads_cmd.txt'
     ads_filename:
-      description: Name of ADS file.
+      description: Name of ADS.
       type: string
       default: adstest.txt
-  dependency_executor_name: command_prompt
-  dependencies:
-  - description: |
-      The file must exist on disk at specified location (#{file_name})
-    prereq_command: |
-      IF EXIST #{file_name} ( EXIT 0 ) ELSE ( EXIT 1 )
-    get_prereq_command: |
-      echo normal_text >> #{file_name} >nul 2>&1
   executor:
     command: |
       echo cmd /c echo "Shell code execution."> #{file_name}:#{ads_filename}