Clean up more cruft

Author: owen-c

Appraisals

@@ -19,11 +19,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "activerecord", ">= 5.1"
-  spec.add_development_dependency "pg"
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
-  spec.add_development_dependency "temping", "~> 3.10.0"
-  spec.add_development_dependency "appraisal"
 end