Use rm_f instead of combining rm with File.exist?

There's a theoretical possibility of a race condition:
https://docs.datadoghq.com/security/code_security/static_analysis/static_analysis_rules/ruby-best-practices/atomic-file-operations/

I don't really expect it to happen, but this way is simpler in any case.

Author: ellnix

spec/support/active_record_schema.rb

@@ -15,7 +15,7 @@
 
 ActiveRecord::Base.raise_in_transactional_callbacks = true if ActiveRecord::Base.respond_to?(:raise_in_transactional_callbacks)
 
-FileUtils.rm('data.sqlite3') if File.exist?('data.sqlite3')
+FileUtils.rm_f('data.sqlite3')
 
 def ar_schema
   @ar_schema ||= ActiveRecord::Schema.new

spec/support/sequel_db.rb

@@ -7,4 +7,4 @@ def sequel_db
                               end)
 end
 
-FileUtils.rm('sequel_data.sqlite3') if File.exist?('sequel_data.sqlite3')
+FileUtils.rm_f('sequel_data.sqlite3')