fixed empty db bug

spec/factories/co_author_relations.rb

@@ -1,4 +1,3 @@
-CoAuthorRelation.destroy_all
 
 types = ["friend", "teacher", "student", "schoolmate", "parent", "best friend", "instructor", "labmate", "TA", "mate"]
 

spec/factories/co_authors.rb

@@ -1,4 +1,3 @@
-CoAuthor.destroy_all
 
 name_tw = Array.new 51,""
 name_tw = name_tw.map do |p| Faker::Name::name end

spec/factories/journal_level_types.rb

@@ -1,4 +1,3 @@
-JournalLevelType.destroy_all
 
 level = ["SCI", "SCIE", "SSCI", "AH & HCI", "EI", "CSCI", "CSSCI", "TSCI", "TSSCI", "THCI"]
 

spec/factories/writing_journal_files.rb

@@ -1,4 +1,3 @@
-WritingJournalFile.destroy_all
 
 file_desc = Array.new 7, ""
 file_desc = file_desc.map do |p| Faker::Lorem.word end

spec/factories/writing_journals.rb

@@ -1,6 +1,5 @@
 require 'json'
 
-WritingJournal.destroy_all
 
 data = File.read("#{Rails.root}/db/data")
 data_json = JSON.parse(data)