fix(common.sh): Stop collecting stats and uploading them to Google.

Just... no.. in so many ways. Kinda dumb it took me this long to delete
this little chunk of rather annoying code.

build_packages

@@ -230,6 +230,5 @@ rm "${tmpfile}"
 trap - EXIT
 
 echo "Builds complete"
-EXTRA_COMMAND_STATS[package_count]=${package_count}
 command_completed
 echo "Done"

common.sh

@@ -769,10 +769,6 @@ print_time_elapsed() {
   fi
 }
 
-# Associative array for filling in extra command-specific stats before
-# calling command_completed.
-declare -A EXTRA_COMMAND_STATS
-
 # Save original command line.
 command_line_arr=( "$0" "$@" )
 
@@ -781,42 +777,6 @@ command_completed() {
   local run_time=$(get_elapsed_seconds)
   local cmd_base=$(basename "${command_line_arr[0]}")
   print_time_elapsed ${run_time} ${cmd_base}
-
-  # Prepare command stats in an associative array.  Additonal command-specific
-  # stats can be added through EXTRA_COMMAND_STATS associative array.
-  declare -A stats
-  stats=(
-    [cmd_line]=${command_line_arr[*]}
-    [cmd_base]=${cmd_base}
-    [cmd_args]=${command_line_arr[*]:1}
-    [run_time]=${run_time}
-    [username]=$(get_git_id)
-    [board]=${FLAGS_board}
-    [host]=$(hostname -f)
-    [cpu_count]=$(grep -c processor /proc/cpuinfo)
-    [cpu_type]=$(uname -p)
-  )
-
-  local attr
-  for attr in "${!EXTRA_COMMAND_STATS[@]}"; do
-    stats[${attr}]=${EXTRA_COMMAND_STATS[${attr}]}
-  done
-
-  # Prepare temporary file for stats.
-  local tmpfile=$(mktemp -t tmp.stats.XXXXXX)
-  trap "rm -f '${tmpfile}'" EXIT
-
-  # Write stats out to temporary file.
-  echo "Chromium OS Build Command Stats - Version 1" > "${tmpfile}"
-  for attr in "${!stats[@]}"; do
-    echo "${attr} ${stats[${attr}]}"
-  done >> "${tmpfile}"
-
-  # Call upload_command_stats on the stats file.  If it fails do not stop.
-  "${GCLIENT_ROOT}"/chromite/bin/upload_command_stats "${tmpfile}" || true
-
-  rm "${tmpfile}"
-  trap - EXIT
 }
 
 # The board and variant command line options can be used in a number of ways