Import wiredtiger: ef9a7983ea47cea78400a4472a3d4e46735385c5 from branch mongodb-3.4

ref: 6a31c2118c..ef9a7983ea
for: 3.4.0-rc2

WT-1592       Add ability to dump detailed cache information via statistics
WT-2403       Enhance random cursor implementation for LSM trees
WT-2880       Add support for Zstandard compression
WT-2904       Fix a bug where the reported checkpoint size could be many times data size
WT-2949       Add an option to wtperf to not close connection on shutdown
WT-2954       Inserting multi-megabyte values can cause large in-memory pages
WT-2955       Add statistics tracking the amount of time threads spend waiting for high level locks
WT-2956       utility tests -h option is always overridden by the default setup
WT-2959       Ensure WT_SESSION_IMPL is never used before it's initialized
WT-2963       Race setting max_entries during eviction
WT-2965       test_wt2323_join_visibility can hang on OSX
WT-2974       lint
WT-2976       Add a statistic tracking how long application threads spend doing I/O
WT-2977       Csuite LSM Random test can occasionally fail
WT-2985       Race during checkpoint can cause a core dump
WT-2987       Fix a bug where opening a cursor on an incomplete table drops core
WT-2988       Fix a bug where __wt_epoch potentially returns garbage values.

1 files changed, 0 insertions, 2 deletions

diff --git a/src/third_party/wiredtiger/test/readonly/readonly.c b/src/third_party/wiredtiger/test/readonly/readonly.c
index 7a131912c31..a4b79f5859f 100644
--- a/src/third_party/wiredtiger/test/readonly/readonly.c
+++ b/src/third_party/wiredtiger/test/readonly/readonly.c
@@ -158,8 +158,6 @@ open_dbs(int op, const char *dir,
 extern int __wt_optind;
 extern char *__wt_optarg;
 
-void (*custom_die)(void) = NULL;
-
 int
 main(int argc, char *argv[])
 {