[INTERNAL] ESLint: Revert change to .eslintignore
[INTERNAL] ESLint: Revert change to .eslintignore

For unkown reasons the global .eslintignore was changed to include all
test resources, which have not been adapted yet to be compliant.

Change-Id: I02847a12a9d921502807ff072d0a97870db2ffcb

cschuff/openui5,nzamani/openui5,SQCLabs/openui5,nzamani/openui5,SAP/openui5,cschuff/openui5,olirogers/openui5,nzamani/openui5,SQCLabs/openui5,SAP/openui5,SQCLabs/openui5,olirogers/openui5,SAP/openui5,olirogers/openui5,SAP/openui5,cschuff/openui5