Remove VERSION file from gemspec

Author: practicingruby

prawn.gemspec

@@ -13,7 +13,7 @@ Gem::Specification.new do |spec|
                 ["data/shift_jis_text.txt"] +
                 ["Rakefile", "prawn.gemspec", "Gemfile",
                  "COPYING", "LICENSE", "GPLv2", "GPLv3",
-                 "VERSION", ".yardopts"]
+                 ".yardopts"]
   spec.require_path = "lib"
   spec.required_ruby_version = '>= 1.9.3'
   spec.required_rubygems_version = ">= 1.3.6"