All,
I tried Sakin’s code, and it did not work for me either. Here is how I resolved it:
I browsed to my page just as a user would and went to the Author info on a post. I right clicked the info to “Inspect element” using the Google Chrome browser. Firefox extension, “FireBug” enables the same function.
There I could see that the parent “class” that contains all of the info is called “entry-meta”. That makes sense because it contains the metadata of the post/entry.
Using Sakin’s instruction’s for adding Custom CSS to the theme, I inserted the following code:
.entry-meta {
display:none;
}