[monitoring-plugins] Use unused variable

[RincewindsHat]

 Module: monitoring-plugins
 Branch: check_disk-compiler_warnings
 Commit: 7ecf2157a927c9a37d2a396f86af7ef5746a7315
 Author: RincewindsHat <12514511+RincewindsHat at users.noreply.github.com>
   Date: Sat Mar 26 15:08:28 2022 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=7ecf215

Use unused variable

---

 plugins/check_disk.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/plugins/check_disk.c b/plugins/check_disk.c
index 66c5dd3..8d99a7e 100644
--- a/plugins/check_disk.c
+++ b/plugins/check_disk.c
@@ -171,7 +171,6 @@ main (int argc, char **argv)
   char *perf_ilabel;
   char *preamble;
   char *flag_header;
-  double inode_space_pct;
   int temp_result;
 
   struct mount_entry *me;