[Faisal_khan]

Try this made in a few minutes:

pawn Код:

CMD:unwarn(playerid, params[])
{
    if(AccInfo[playerid][Level] < 2) return SendClientMessage(playerid, COLOR_ERROR, "You are not Admin!");
    new
        tempname,
        temptext[128];
    if(sscanf(params, "us[128]", tempname, temptext)) return SendClientMessage( playerid, -1, "Usage: /unwarn [PlayerID] [reason]");
    if(!IsPlayerConnected(tempname)) return SendClientMessage( playerid, -1, "Player is not connected.");
    SetPVarInt(tempname, "Warnings", GetPVarInt( tempname, "Warnings") - 1 );
    new
        String[50];
    format(String, sizeof(String), "Admin %u removed your one warning.", playerid);
    SendClientMessage( tempname, -1, String );
    format(String, sizeof(String), "You removed a warning for player %u for %s.", tempname, temptext);
    SendClientMessage(playerid, -1, String);
    return 1;
}