range: remove dead code

Since a ParseError is always thrown for zero arguments, the if and all
dependent code can be removed.

lib/puppet/parser/functions/range.rb

@@ -41,29 +41,9 @@ Will return: [0,2,4,6,8]
     raise(Puppet::ParseError, "range(): Wrong number of " +
       "arguments given (#{arguments.size} for 1)") if arguments.size < 1
 
-    if arguments.size > 1
-      start = arguments[0]
-      stop  = arguments[1]
-      step  = arguments[2].nil? ? 1 : arguments[2].to_i.abs
-
-      type = '..' # We select simplest type for Range available in Ruby ...
-
-    elsif arguments.size > 0
-      value = arguments[0]
-
-      if m = value.match(/^(\w+)(\.\.\.?|\-)(\w+)$/)
-        start = m[1]
-        stop  = m[3]
-
-        type = m[2]
-
-      elsif value.match(/^.+$/)
-        raise(Puppet::ParseError, 'range(): Unable to compute range ' +
-          'from the value given')
-      else
-        raise(Puppet::ParseError, 'range(): Unknown format of range given')
-      end
-    end
+    start = arguments[0]
+    stop  = arguments[1]
+    step  = arguments[2].nil? ? 1 : arguments[2].to_i.abs
 
     # Check whether we have integer value if so then make it so ...
     if start.to_s.match(/^\d+$/)
@@ -74,14 +54,10 @@ Will return: [0,2,4,6,8]
       stop  = stop.to_s
     end
 
-    range = case type
-      when /^(\.\.|\-)$/ then (start .. stop)
-      when /^(\.\.\.)$/  then (start ... stop) # Exclusive of last element ...
-    end
+    # We select simplest type for Range available in Ruby ...
+    range = (start .. stop)
 
-    result = range.step(step).collect { |i| i } # Get them all ... Pokemon ...
-
-    return result
+    range.step(step).collect { |i| i } # Get them all ... Pokemon ...
   end
 end