Remove static JavaScript HAML fixtures

spec/javascripts/fixtures/ajax_loading_spinner.html.haml

spec/javascripts/fixtures/balsamiq_viewer.html.haml

spec/javascripts/fixtures/create_item_dropdown.html.haml

spec/javascripts/fixtures/event_filter.html.haml

spec/javascripts/fixtures/gl_dropdown.html.haml

spec/javascripts/fixtures/gl_field_errors.html.haml

spec/javascripts/fixtures/issuable_filter.html.haml

spec/javascripts/fixtures/issue_sidebar_label.html.haml

spec/javascripts/fixtures/line_highlighter.html.haml

spec/javascripts/fixtures/linked_tabs.html.haml

spec/javascripts/fixtures/merge_requests_show.html.haml

spec/javascripts/fixtures/mini_dropdown_graph.html.haml

spec/javascripts/fixtures/notebook_viewer.html.haml

spec/javascripts/fixtures/oauth_remember_me.html.haml

spec/javascripts/fixtures/pdf_viewer.html.haml

spec/javascripts/fixtures/pipeline_graph.html.haml

spec/javascripts/fixtures/pipelines.html.haml

...avascripts/fixtures/project_select_combo_button.html.haml

spec/javascripts/fixtures/search_autocomplete.html.haml

spec/javascripts/fixtures/signin_tabs.html.haml