Remove unused cases from gmail-gmail

__tests__/files/gmail-gmail/one/04/r_plainContent.data

-test 1
-*test* 2
-test 3
-*test 4*
-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiA2gvjlHXdgHVxQA0N42bO5Ss8wTw2SgEBS9evF5tGxHBIgkgGFnmzzToMMA3P9-QMv2Xs9xtUR264mw1DyPgm4bYU=&timestamp=1605796052654>

__tests__/files/gmail-gmail/one/04/s_htmlContent.html

-test 1
-<div><b>test</b> 2</div>
-<div>test 3</div>
-<div><i>test 4</i></div>

__tests__/files/gmail-gmail/one/04/s_plainContent.data

-test 1test 2test 3test 4

__tests__/files/gmail-gmail/one/05/r_plainContent.data

-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiBOv-A-VbCT4WnNn49GvTbuctlovIHxNfwFqaN-WKQ4XxIgwmT3z8UI-KoaWYJKGv6dkZ7HYjRa8N_CwPYmN4jzj6Y=&timestamp=1605796334213>

__tests__/files/gmail-gmail/one/05/s_htmlContent.html

-<br />

__tests__/files/gmail-gmail/one/06/r_plainContent.data

-some simple text here
-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiB8Mob3pkd4DYcjvHcQ8HR4pN5cpLlulydaUtpxgEiQexIgwoqz55hFdBuiIwwN-LVjsy0EzW5e-WC3gykoylbPFwM=&timestamp=1605796554556>

__tests__/files/gmail-gmail/one/06/s_htmlContent.html

-some simple text here

__tests__/files/gmail-gmail/one/06/s_plainContent.data

-some simple text here

__tests__/files/gmail-gmail/one/07/r_plainContent.data

-some simple test with 3 html files
-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiDk0FNNmd4hQOChhzYL3cLGlMhDLF11c_vkBDc7jpGSehIgTLqKk9heb5Wat9dUMdi85mOcEPZAUxDR2qYkstCukCg=&timestamp=1605797335860>

__tests__/files/gmail-gmail/one/07/s_htmlContent.html

-some simple test with 3 html files

__tests__/files/gmail-gmail/one/07/s_plainContent.data

-some simple test with 3 html files

__tests__/files/gmail-gmail/one/09/r_plainContent.data

-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiAkKhktExv-noQx1DGP6vC-V2myOcek-zBlnXYq02_PEhIgmWWvq5ZbH2NIIUullSu5fvZxhEDZYLrnzrfM4DPs-dw=&timestamp=1605798562614>

__tests__/files/gmail-gmail/one/09/s_htmlContent.html

-<br />

__tests__/files/gmail-gmail/one/11/r_plainContent.data

-simple test with one image.
-[image: IMG_20190506_092830.jpg]
-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiCmwWFPjhqG6LEzg0N71njJJYicXy9aAvXsdf8rDsY3lhIgEA8O9yjtSCPxIKKW606JeMMC5up7D3_qF0DV-2tv2Ew=&timestamp=1605799319124>

__tests__/files/gmail-gmail/one/11/s_htmlContent.html

-simple test with one image.
-<div>
-  <img
-    data-surl="cid:ii_khozg61h0"
-    src="blob:https://mail.google.com/0a371293-60fe-46a1-a668-ae423f83c5f4"
-    alt="IMG_20190506_092830.jpg"
-    width="392"
-    height="294"
-  /><br />
-</div>
-<br />

__tests__/files/gmail-gmail/one/11/s_plainContent.data

-simple test with one image.

__tests__/files/gmail-gmail/one/12/r_plainContent.data

-simple text with attached file.
-[image: qrcode.png]
-<https://gcloud-dev.vrgnservices.com/?q=CiAVNk71j-FZlpPgo7HPfEMbN9NEd2nTORkWNOgh8V9KMBIgZD-gcw24oIcqcF-udF9OBtNNC7k4wPhb6UN9dwKSCIU=&timestamp=1605799570157>

__tests__/files/gmail-gmail/one/12/s_htmlContent.html

-simple text with attached file.