Remove consecutive blank lines

Some of them were introduced by mass-removal of S = WORKDIR/git assignments;
rather than try to fix up (or redo) just these, I've run this sed command over
the whole tree:

sed -i -z -E 's/([ \t\f\v\r]*\n){3,}/\n\n/g' `find . -name *.bb -o -name *.inc`

The rationale is that more than one empty line is wasting vertical screen space, and
does nothing for readability.

Signed-off-by: Alper Ak <alperyasinak1@gmail.com>

recipes-graphics/libump/libump_git.bb

@@ -10,5 +10,3 @@ SRCREV = "ec0680628744f30b8fac35e41a7bd8e23e59c39f"
 
 SRC_URI = "git://github.com/linux-sunxi/libump.git;protocol=https;branch=master"
 
-
-