Remove allowed_push_host from gemspec

Author: peterzhu2118

shopify-ruby-definitions.gemspec

@@ -13,8 +13,6 @@ Gem::Specification.new do |spec|
   spec.license = "MIT"
   spec.required_ruby_version = ">= 2.6.0"
 
-  spec.metadata["allowed_push_host"] = "TODO: Set to your gem server 'https://example.com'"
-
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/shopify/ruby-definitions"