Remove references to Travis CI (#722)

Travis CI removed support for Crystal images and is no
longer part of shards init, and can be safely removed from
the generators.

spec/integration/init_web_spec.cr

@@ -17,7 +17,6 @@ describe "Initializing a new web project" do
       File.delete("test-project/.env")
       compile_and_run_specs_on_test_project
       File.read("test-project/Procfile").should contain "test_project"
-      File.read("test-project/.travis.yml").should contain "postgresql"
       File.read(".github/workflows/ci.yml").should contain "postgres"
       File.read("test-project/public/mix-manifest.json").should contain "images/cat.gif"
       File.exists?("test-project/public/favicon.ico").should eq true

src/generators/web.cr

@@ -32,7 +32,6 @@ class LuckyCli::Generators::Web
     ensure_directory_does_not_exist
     generate_default_crystal_project
     add_deps_to_shard_file
-    remove_generated_travis_file
     remove_generated_src_files
     remove_generated_spec_files
     remove_default_readme
@@ -109,10 +108,6 @@ class LuckyCli::Generators::Web
     remove_default_generated_if_exists("src")
   end
 
-  private def remove_generated_travis_file
-    remove_default_generated_if_exists(".travis.yml")
-  end
-
   private def remove_generated_spec_files
     remove_default_generated_if_exists("spec")
   end