Why? Is that to reduce the number of requests?
They are as big as they are. You could put them on a single long line.
To tidy up the view in development you could do what I often do with in-line SVGs, I keep them as a separate file and insert them into the html where required as PHP includes. This makes the html much tidier while retaining the advantages of in-lining them. It also has the advantage of separating the files so they can be edited and reused independently of the html file.