Remove hash algorithms unsupported in v6.0 (#1873)

MACTripleDES and RIPEMD160 are no longer supported in v6.0.

Author: matt9ucci

reference/6/Microsoft.PowerShell.Core/About/About_Using.md

@@ -49,7 +49,7 @@ and to `[MemoryStream]` in *System.IO*.
     using namespace System.IO
 
     [string]$string = "Hello World"
-    [string]$algorithm = "SHA256" ## Valid values are "SHA1", "SHA256", "SHA384", "SHA512", "MACTripleDES", "MD5", "RIPEMD160"
+    [string]$algorithm = "SHA256" ## Valid values are "SHA1", "SHA256", "SHA384", "SHA512", "MD5"
 
     [byte[]]$stringbytes = [UnicodeEncoding]::Unicode.GetBytes($string)
 

reference/6/Microsoft.PowerShell.Utility/Get-FileHash.md

@@ -127,9 +127,7 @@ The acceptable values for this parameter are:
 - SHA256
 - SHA384
 - SHA512
-- MACTripleDES
 - MD5
-- RIPEMD160
 
 If no value is specified, or if the parameter is omitted, the default value is SHA256.
 
@@ -139,7 +137,7 @@ For security reasons, MD5 and SHA1, which are no longer considered secure, shoul
 Type: String
 Parameter Sets: (All)
 Aliases: 
-Accepted values: SHA1, SHA256, SHA384, SHA512, MACTripleDES, MD5, RIPEMD160
+Accepted values: SHA1, SHA256, SHA384, SHA512, MD5
 
 Required: False
 Position: Named