No need to check x > 0

Checked in the previous line.

Author: ima1zumi

lib/reline/ansi.rb

@@ -266,15 +266,15 @@ def self.move_cursor_column(x)
 
   def self.move_cursor_up(x)
     if x > 0
-      @@output.write "\e[#{x}A" if x > 0
+      @@output.write "\e[#{x}A"
     elsif x < 0
       move_cursor_down(-x)
     end
   end
 
   def self.move_cursor_down(x)
     if x > 0
-      @@output.write "\e[#{x}B" if x > 0
+      @@output.write "\e[#{x}B"
     elsif x < 0
       move_cursor_up(-x)
     end