[ruby/digest] Remove .gitignore and .travis.yml from gemspec

ruby/digest@7b57b73f46

ext/digest/digest.gemspec

@@ -13,17 +13,19 @@ Gem::Specification.new do |spec|
   spec.licenses      = ["Ruby", "BSD-2-Clause"]
 
   spec.files         = [
-    ".gitignore", ".travis.yml", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup",
-    "digest.gemspec", "ext/digest/bubblebabble/bubblebabble.c", "ext/digest/bubblebabble/extconf.rb", "ext/digest/defs.h",
+    "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "digest.gemspec",
+    "ext/digest/bubblebabble/bubblebabble.c", "ext/digest/bubblebabble/extconf.rb", "ext/digest/defs.h",
     "ext/digest/digest.c", "ext/digest/digest.h", "ext/digest/digest_conf.rb", "ext/digest/extconf.rb",
     "ext/digest/md5/extconf.rb", "ext/digest/md5/md5.c", "ext/digest/md5/md5.h", "ext/digest/md5/md5cc.h",
     "ext/digest/md5/md5init.c", "ext/digest/rmd160/extconf.rb", "ext/digest/rmd160/rmd160.c",
-    "ext/digest/rmd160/rmd160.h", "ext/digest/rmd160/rmd160init.c",
-    "ext/digest/sha1/extconf.rb", "ext/digest/sha1/sha1.c", "ext/digest/sha1/sha1.h", "ext/digest/sha1/sha1cc.h",
+    "ext/digest/rmd160/rmd160.h", "ext/digest/rmd160/rmd160init.c", "ext/digest/sha1/extconf.rb",
+    "ext/digest/sha1/sha1.c", "ext/digest/sha1/sha1.h", "ext/digest/sha1/sha1cc.h",
     "ext/digest/sha1/sha1init.c", "ext/digest/sha2/extconf.rb", "ext/digest/sha2/lib/sha2.rb",
-    "ext/digest/sha2/sha2.c", "ext/digest/sha2/sha2.h", "ext/digest/sha2/sha2cc.h", "ext/digest/sha2/sha2init.c",
-    "ext/digest/test.sh", "ext/openssl/deprecation.rb", "lib/digest.rb"
+    "ext/digest/sha2/sha2.c", "ext/digest/sha2/sha2.h", "ext/digest/sha2/sha2cc.h",
+    "ext/digest/sha2/sha2init.c", "ext/digest/test.sh", "ext/openssl/deprecation.rb",
+    "lib/digest.rb"
   ]
+
   spec.required_ruby_version = ">= 2.3.0"
 
   spec.bindir        = "exe"