[libpq] Remove broken features

[JackBoosY]

Remove features due to their dependency are missing :

• perl
• kerberos
• ldap
• bsd
• pam

Fixes #12414

[JackBoosY]

In portfile.cmake line 19:

if(VCPKG_TARGET_IS_WINDOWS)
    # on windows libpq seems to only depend on openssl gss(kerberos) and ldap on the soruce site_name
    # the configuration header depends on zlib, nls, uuid, xml, xlst,gss,openssl,icu
    feature_unsupported(readline bonjour libedit systemd llvm)
    feature_not_implemented_yet(uuid)
elseif(VCPKG_TARGET_IS_OSX)
    feature_not_implemented_yet(readline libedit systemd llvm python tcl uuid)
else()
    feature_not_implemented_yet(readline bonjour libedit systemd llvm python tcl uuid)
endif()

All triplets do not support some common features, should they also be deleted?

[ras0219-msft]

This LGTM.