config/git: don't download flashrom

it's not actually needed in lbmk

flashrom can be downloaded separately by the user,
if they want to flash their chip

Signed-off-by: Leah Rowe <leah@libreboot.org>

config/git/flashrom

@@ -1,5 +0,0 @@
-{flashrom}{
-	rev: 11680db4e1251eb842bee11e53b6d1f0ae67767b
-	loc: flashrom 
-	url: https://review.coreboot.org/flashrom.git
-}