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>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

recipes-devtools/raspi-gpio/raspi-gpio_git.bb

@@ -12,4 +12,3 @@ SRCREV = "22b44e4765b4b78dc5b22394fff484e353d5914d"
 SRC_URI = "git://github.com/RPi-Distro/raspi-gpio.git;protocol=https;branch=master \
           "
 
-