Revert "add :document_counter to render_document_partial call in index.atom.builder so index templates that use 'document_counter' variable don't cause errors in catalog#index atom-format view"

This reverts commit 60b16eb238ee0221e35f754607f9fff6893e4fe7.

Need to redo this commit with better code formatting
add :document_counter to render_document_partial call in index.atom.builder so any index view templates that use 'document_counter' variable don't cause errors in catalog#index atom-format view