
Step #1: Log in to your Dashboard, go to Template > Edit HTML
Step #2: Click anywhere inside the code area and press the CTRL + F keys to open the Blogger' search box
Type or paste the following tag inside the search box then hit Enter to find it:
</head>

Step #3: Just above </head> add this code:
<style>
#Attribution1 {
display: none;
}
</style>
Step #4: Click on the Save Template button to save the changes.
That was all !