Remove unnecessary package.json deletion

[y-yagi]

The package.json is created only if skip_yarn is not specified.
https://github.com/rails/rails/blob/a4c1282854795d1f0d7696ce1ccbabf94b3d9098/railties/lib/rails/generators/rails/app/app_generator.rb#L202..L204

[rails-bot]

r? @pixeltrix

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[y-yagi]

Hmmm. It seems that the test unrelated to this change is falling.

  1) Failure:
ApplicationTests::BinSetupTest#test_bin_setup_output [test/application/bin_setup_test.rb:45]:
--- expected
+++ actual
@@ -1,11 +1,6 @@
 "== Installing dependencies ==
-The Gemfile's dependencies are satisfied
+ERROR:  While executing gem ... (Gem::UnsatisfiableDependencyError)
+    Unable to resolve dependency: user requested 'io-console (= 0.4.6)'
 
-== Preparing database ==
-Created database 'db/development.sqlite3'
-Created database 'db/test.sqlite3'
-
-== Removing old logs and tempfiles ==
-
-== Restarting application server ==
+== Command [\"gem install bundler --conservative\"] failed ==
 "
  2) Failure:
ApplicationTests::BinSetupTest#test_bin_setup [test/application/bin_setup_test.rb:30]:
Expected: 0
  Actual: 5 

[y-yagi]

The bin_setup_test.rb test passed by rubygems 2.6.11, but it falls in 2.6.12.

$ gem -v
2.6.11
$ ./bin/test -w test/application/bin_setup_test.rb
Run options: -w --seed 50496

# Running:

..

Finished in 10.729669s, 0.1864 runs/s, 0.6524 assertions/s.

2 runs, 7 assertions, 0 failures, 0 errors, 0 skips 
 
$ gem update --system 2.6.12
$ gem -v
2.6.12
$ ./bin/test -w test/application/bin_setup_test.rb
Run options: -w --seed 9481

# Running:

F

Failure:
ApplicationTests::BinSetupTest#test_bin_setup_output [/home/yaginuma/program/rails/master_y_yagi/rails/railties/test/application/bin_setup_test.rb:45]:
--- expected
+++ actual
@@ -1,11 +1,6 @@
 "== Installing dependencies ==
-The Gemfile's dependencies are satisfied
+ERROR:  While executing gem ... (Gem::UnsatisfiableDependencyError)
+    Unable to resolve dependency: user requested 'did_you_mean (= 1.1.0)'
 
-== Preparing database ==
-Created database 'db/development.sqlite3'
-Created database 'db/test.sqlite3'
-
-== Removing old logs and tempfiles ==
-
-== Restarting application server ==
+== Command [\"gem install bundler --conservative\"] failed ==
 "



bin/test test/application/bin_setup_test.rb:36

F

Failure:
ApplicationTests::BinSetupTest#test_bin_setup [/home/yaginuma/program/rails/master_y_yagi/rails/railties/test/application/bin_setup_test.rb:30]:
Expected: 0
  Actual: 5


bin/test test/application/bin_setup_test.rb:15



Finished in 2.730411s, 0.7325 runs/s, 1.8312 assertions/s.

2 runs, 5 assertions, 2 failures, 0 errors, 0 skips 

[rafaelfranca]

Backported in fddf802