Remove unused code in Update-ScriptFileInfo

[matt9ucci]

The assigned value "" is not used because it is replaced in the next line.

$requiresStrings = ""
$requiresStrings = Get-RequiresString -RequiredModules $RequiredModules

The if statement is always $false because "`r`nParam()`r`n`r`n" is appended in the previous line.

$ScriptMetadataString += "`r`nParam()`r`n`r`n"
if(-not $ScriptMetadataString)
{
	return
}