Remove sqlite3 from gemfile

Gemfile

@@ -7,8 +7,8 @@ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 # gem "rails"
 
 gem "httparty", "~> 0.18.0"
+
 gem "nokogiri", "~> 1.10"
-gem "sqlite3", "~> 1.4"
 
 gem "pg", "~> 1.2"