Update gemspec

Author: cfis

libxml-ruby.gemspec

@@ -1,5 +1,4 @@
 # encoding: utf-8
-require 'date'
 
 # Determine the current version of the software
 version = File.read('ext/libxml/ruby_xml_version.h').match(/\s*RUBY_LIBXML_VERSION\s*['"](\d.+)['"]/)[1]
@@ -10,11 +9,9 @@ Gem::Specification.new do |spec|
   spec.homepage    = 'https://xml4r.github.io/libxml-ruby/'
   spec.summary     = 'Ruby Bindings for LibXML2'
   spec.description = <<-EOS
-    The Libxml-Ruby project provides Ruby language bindings for the GNOME
-    Libxml2 XML toolkit. It is free software, released under the MIT License.
-    Libxml-ruby's primary advantage over REXML is performance - if speed
-    is your need, these are good libraries to consider, as demonstrated
-    by the informal benchmark below.
+    libxml-Ruby provides Ruby language bindings for libxml2 It is free software, 
+    released under the MIT License. libxml-ruby provides DOM, SAX, Reader, and 
+    Writer APIs along with XPath support and validation via DTD, RelaxNG, and XML Schema.
   EOS
   spec.authors = ['Ross Bamform', 'Wai-Sun Chia', 'Sean Chittenden',
                   'Dan Janwoski', 'Anurag Priyam', 'Charlie Savage',
@@ -26,10 +23,8 @@ Gem::Specification.new do |spec|
   spec.files = Dir.glob(['CHANGELOG.md',
                          'LICENSE',
                          'libxml-ruby.gemspec',
-                         'MANIFEST',
                          'Rakefile',
                          'README.md',
-                         'setup.rb',
                          'ext/libxml/*.def',
                          'ext/libxml/*.h',
                          'ext/libxml/*.c',
@@ -42,7 +37,6 @@ Gem::Specification.new do |spec|
 
   spec.test_files = Dir.glob('test/test_*.rb')
   spec.required_ruby_version = '>= 3.2'
-  spec.date = DateTime.now
   spec.add_development_dependency('logger')
   spec.add_development_dependency('rake-compiler')
   spec.add_development_dependency('minitest')