[C++] Stop restoring environment variables with --ninja_suffix

Also remove --lunch in m2n. They were mainly for my development
and are not necessary anymore. .kati_env causes an error
message for mmm build in Android repo.

1 files changed, 0 insertions, 1 deletions

diff --git a/flags.cc b/flags.cc
index d984997..8884dd8 100644
--- a/flags.cc
+++ b/flags.cc
@@ -24,5 +24,4 @@ int g_num_jobs;
 int g_remote_num_jobs;
 bool g_detect_android_echo;
 bool g_gen_regen_rule;
-bool g_error_on_env_change;
 const char* g_ignore_dirty_pattern;