Backed out the acquire lock hack in the dependencies script (again).

Somehow this got resurrected during all of the repo changes.

Author: MythicLionMan

scripts/get-ios.sh

@@ -6,8 +6,6 @@ popd > /dev/null
 
 . "$scriptpath/include.sh/build-dep.sh"
 
-acquire_lock "$0.lock"
-
 deps="ctemplate-ios libetpan-ios tidy-html5-ios"
 for dep in $deps ; do
   name="$dep"

scripts/get-mac.sh

@@ -6,8 +6,6 @@ popd > /dev/null
 
 . "$scriptpath/include.sh/build-dep.sh"
 
-acquire_lock "$0.lock"
-
 deps="ctemplate-osx libetpan-osx"
 for dep in $deps ; do
   name="$dep"

scripts/include.sh/build-dep.sh

@@ -1,31 +1,5 @@
 #!/bin/sh
 
-# Aquires an exclusive lock for the execation of the script. The only (reqruired)
-# parameter is the path to the lockfile to use. Only one script can run using the
-# same lockfile path. The lock will be released automatically when the script 
-# terminates. If another process has the lock then the caller will block until
-# they release it. This function should only be called once per script.
-acquire_lock()
-{
-  # Store lockfile in a global variable, otherwise it won't be defined when the
-  # cleanup hook is called 
-  lockfile="$1"
-  while :
-  do
-    if mkdir "$lockfile" 2>/dev/null; then
-      echo "Lock $lockfile acquired"
-
-      # Remove lockdir when the script finishes, or when it receives a signal
-      trap 'rm -rf "$lockfile"' EXIT
-      break
-    else
-      # Yes, this is as gross as it looks
-      echo "Another process has the lock $lockfile, waiting…"
-      sleep 1
-    fi
-  done
-}
-
 build_git_ios()
 {
   if test "x$name" = x ; then