[test] remove minitest-reporters

gem not compatible with rubymine test runner

Author: honzasterba

Gemfile

@@ -7,7 +7,6 @@ gemspec
 
 # Specify development dependencies below
 gem "minitest", "~> 5.1", require: false
-gem "minitest-reporters"
 gem "mocha"
 
 gem "rubocop-minitest", require: false

test/test_helper.rb

@@ -3,7 +3,6 @@
 require "mcp"
 
 require "minitest/autorun"
-require "minitest/reporters"
 require "minitest/mock"
 require "mocha/minitest"
 
@@ -13,5 +12,3 @@
 require "sorbet-runtime"
 
 require_relative "instrumentation_test_helper"
-
-Minitest::Reporters.use!(Minitest::Reporters::ProgressReporter.new)