update/release: delete *all* .git and .gitmodules

do it using find -exec

this is more robust, and it will never need to be
maintained over time (famous last words).

this is done because now we download submodules
for all git projects, so it's hard to predict.

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

script/update/release

@@ -91,9 +91,10 @@ fetch_trees()
 		xp="${x#*/}"; xp="${xp%/*}"
 		[ -L "${xp}" ] || x_ rm -Rf "src/${xp}/${xp}"
 	done
-	rm -Rf */.git* */*/.git* */*/*/.git* */*/*/*/.git* */*/*/*/*/.git* \
-	    */*/*/*/*/*/.git* */*/*/*/*/*/*/.git* */*/*/*/*/*/*/*/.git* \
-	    */*/*/*/*/*/*/*/*/.git* .git tmp || err "${_xm}: rm-dotgit"
+
+	find . -name ".git" -exec rm -Rf {} + || err "${_xm}: rm .git"
+	find . -name ".gitmodules" -exec rm -Rf {} + || err "${_xm}: rm .gitmod"
+	x_ rm -Rf tmp
 }
 
 mkrom_images()