fix in test/test_blogger_importer.rb
fix in test/test_blogger_importer.rb

Two 'the in-elem-entry-to-post-data converter should raise an error if original_url not exists.' exists (duplicated).
So the 2nd test is replaced with '...should raise an error if non-post-kind not exists'.
In addition, fix the 1st test.

shybovycha/jekyll-import,danbernier/jekyll-import,supriyantomaftuh/jekyll-import,stefanw/jekyll-import,Teino1978-Corp/jekyll-import,ligthyear/jekyll-import,danbernier/jekyll-import,cityoffortworth/jekyll-import,jekyll/jekyll-import,Teino1978-Corp/jekyll-import,stefanw/jekyll-import,geerlingguy/jekyll-import,shybovycha/jekyll-import,gynter/jekyll-import,gynter/jekyll-import,geerlingguy/jekyll-import,jekyll/jekyll-import,cityoffortworth/jekyll-import,danbernier/jekyll-import,ligthyear/jekyll-import,ligthyear/jekyll-import,shybovycha/jekyll-import,geerlingguy/jekyll-import,supriyantomaftuh/jekyll-import,gynter/jekyll-import,stefanw/jekyll-import,Teino1978-Corp/jekyll-import,supriyantomaftuh/jekyll-import