system/skeleton: drop pcmcia bits

They're obsolete and the package was removed way back in 2010.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

system/skeleton/var/lib/pcmcia

@@ -1 +0,0 @@
-../../tmp

system/skeleton/var/pcmcia

@@ -1 +0,0 @@
-../tmp