Remove term-ansicolor

Author: nateberkopec

terminal-table.gemspec

@@ -19,7 +19,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", ">= 3.0"
-  spec.add_development_dependency "term-ansicolor"
   spec.add_development_dependency "pry"
 
   spec.add_runtime_dependency "unicode-display_width", [">= 1.1.1", "< 4"]