Remove outdated about_scriptanalyzer help file (#951)

* remove old cmdlet help file that is not needed any more due to help being markdown based.

* Remove about_scriptanalyzer copy step from build and links to it in markdown. Also correct version of platyps

Author: bergmeister

.build.ps1

@@ -188,9 +188,6 @@ task buildDocs -Inputs $bdInputs -Outputs $bdOutputs {
     $markdownDocsPath = Join-Path $docsPath 'markdown'
     CreateIfNotExists($outputDocsPath)
 
-    # copy the about help file
-    Copy-Item -Path $docsPath\about_PSScriptAnalyzer.help.txt -Destination $outputDocsPath -Force
-
     # Build documentation using platyPS
     if ($null -eq (Get-Module platyPS -ListAvailable -Verbose:$verbosity | Where-Object { $_.Version -ge 0.9 })) {
         throw "Cannot find platyPS of version greater or equal to 0.9. Please install it from https://www.powershellgallery.com/packages/platyPS/ using e.g. the following command: Install-Module platyPS"

build.ps1

@@ -91,11 +91,9 @@ if ($BuildDocs)
     $outputDocsPath = Join-Path $destinationPath en-US
 
     CreateIfNotExists($outputDocsPath)
-    # copy the about help file
-    Copy-Item -Path $docsPath\about_PSScriptAnalyzer.help.txt -Destination $outputDocsPath -Force -Verbose:$verbosity
 
     # Build documentation using platyPS
-    if ($null -eq (Get-Module platyPS -ListAvailable -Verbose:$verbosity | Where-Object { $_.Version -ge 0.5 }))
+    if ($null -eq (Get-Module platyPS -ListAvailable -Verbose:$verbosity | Where-Object { $_.Version -ge 0.9 }))
     {
         "Cannot find platyPS. Please install it from https://www.powershellgallery.com/packages/platyPS/ using e.g. the following command: Install-Module platyPS"
     }

docs/about_PSScriptAnalyzer.help.txt

@@ -23,10 +23,9 @@ Use this cmdlet to create collections of rules to include and exclude when runni
 To get information about the rules, see the value of the Description property of each rule.
 
 The PSScriptAnalyzer module tests the Windows PowerShell code in a script, module, or DSC resource to determine whether, and to what extent, it fulfils best practice standards.
-For more information about PSScriptAnalyzer, type: Get-Help about_PSScriptAnalyzer.
 
 PSScriptAnalyzer is an open-source project.
-To contribute or file an issue, see GitHub.com\PowerShell\PSScriptAnalyzer.
+For more information about PSScriptAnalyzer, to contribute or file an issue, see GitHub.com\PowerShell\PSScriptAnalyzer.
 
 ## EXAMPLES
 
@@ -166,7 +165,4 @@ The RuleInfo object is a custom object created especially for Script Analyzer. I
 
 [Invoke-ScriptAnalyzer]()
 
-[about_PSScriptAnalyzer]()
-
 [PSScriptAnalyzer on GitHub](https://github.com/PowerShell/PSScriptAnalyzer)
-

docs/markdown/Get-ScriptAnalyzerRule.md

@@ -52,11 +52,9 @@ For usage in CI systems, the -EnableExit exits the shell with an exit code equal
 
 The PSScriptAnalyzer module tests the Windows PowerShell code in a script, module, or DSC resource to determine
 whether, and to what extent, it fulfils best practice standards.
-For more information about PSScriptAnalyzer, type:
-Get-Help about_PSScriptAnalyzer.
 
 PSScriptAnalyzer is an open-source project.
-To contribute or file an issue, see GitHub.com\PowerShell\PSScriptAnalyzer.
+For more information about PSScriptAnalyzer, to contribute or file an issue, see GitHub.com\PowerShell\PSScriptAnalyzer.
 
 ## EXAMPLES
 
@@ -538,7 +536,4 @@ If you use the SuppressedOnly parameter, Invoke-ScriptAnalyzer instead returns a
 
 [Get-ScriptAnalyzerRule]()
 
-[about_PSScriptAnalyzer]()
-
 [PSScriptAnalyzer on GitHub](https://github.com/PowerShell/PSScriptAnalyzer)
-