Make cld2_table_size configurable in GN builds

BUG=

Review URL: https://codereview.chromium.org/1377333002

Cr-Original-Commit-Position: refs/heads/master@{#352566}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 457c1fdaf8287b8df965379962f16cdcc4da3477

config/features.gni

@@ -125,12 +125,6 @@ declare_args() {
 #   2: Use only CLD2.
 cld_version = 2
 
-if (is_android || is_ios) {
-  cld2_table_size = 0  # Small, accurate tables
-} else {
-  cld2_table_size = 2  # Larger, more accurate tables
-}
-
 # libudev usage. This currently only affects the content layer.
 use_udev = is_linux && !is_chromecast