lightbox: Remove redundant parameter `options` from lightbox.open().
lightbox: Remove redundant parameter `options` from lightbox.open().

The `options` parameter is not being passed in any call
of `lightbox.open()` and it uses the same option i.e.
`lightbox_canvas` everytime which is now computed inside
`display_image()` directly.

showell/zulip,shubhamdhama/zulip,hackerkid/zulip,brainwane/zulip,timabbott/zulip,hackerkid/zulip,kou/zulip,brainwane/zulip,rht/zulip,hackerkid/zulip,rht/zulip,zulip/zulip,shubhamdhama/zulip,kou/zulip,shubhamdhama/zulip,kou/zulip,punchagan/zulip,hackerkid/zulip,brainwane/zulip,showell/zulip,timabbott/zulip,shubhamdhama/zulip,showell/zulip,synicalsyntax/zulip,showell/zulip,andersk/zulip,showell/zulip,rht/zulip,eeshangarg/zulip,shubhamdhama/zulip,shubhamdhama/zulip,brainwane/zulip,eeshangarg/zulip,shubhamdhama/zulip,timabbott/zulip,punchagan/zulip,brainwane/zulip,synicalsyntax/zulip,andersk/zulip,synicalsyntax/zulip,hackerkid/zulip,andersk/zulip,andersk/zulip,hackerkid/zulip,kou/zulip,zulip/zulip,punchagan/zulip,rht/zulip,zulip/zulip,synicalsyntax/zulip,zulip/zulip,timabbott/zulip,synicalsyntax/zulip,andersk/zulip,timabbott/zulip,rht/zulip,synicalsyntax/zulip,zulip/zulip,zulip/zulip,punchagan/zulip,timabbott/zulip,rht/zulip,hackerkid/zulip,eeshangarg/zulip,brainwane/zulip,kou/zulip,kou/zulip,eeshangarg/zulip,synicalsyntax/zulip,brainwane/zulip,kou/zulip,andersk/zulip,rht/zulip,eeshangarg/zulip,showell/zulip,timabbott/zulip,eeshangarg/zulip,punchagan/zulip,eeshangarg/zulip,punchagan/zulip,andersk/zulip,showell/zulip,zulip/zulip,punchagan/zulip