I finally figured it out with reading a couple of the links, confirming that "up, up, down, down, left, right, left, right, b, a" meant the arrow keys, since that is what I assumed you all meant, and finally getting past the Windows speak of Settings Window when Macs, even with Opera, use the word Preferences instead of Settings. So I was having a hard time finding the Settings page. And when that comes up, via whichever route you take (Opera > pull down contextual menu > Preferences or typing in the URL (address) bar, opera:config or opera:settings and clicking Enter, the opaque white Preferences window comes down, totally obscuring the Search box (so not necessary to mention clicking outside the Search Box as one has no where else to click, I finally enabled Super User and got rid of the google search bar, thank you.

My apologies if you think I'm a bit too picky on wording, but this is how we communicate well. And not all on here are used to the interchanging use of Windows and Mac specific languages and commands.

rafaeljvieira's post in this link below, was the one that spelled it out best even though he did use capital BA instead of small case b>a .
http://forums.opera.com/topic/4445/how-do-i-remove-the-google-search-bar-from-the-speed-dial

Again,
Thank you for your time and efforts and maybe this post will come up for the next person looking for the same answer.

...

Basically open the Settings page, click outside of the search field and input the Konami Code so it'll reveal advanced settings to you. One of them under user interface will let you hide the Speed Dial search bar.