samples: shell: shell_module: mitigate sonarqube warning

This mitigates a sonarqube warning "Value stored to 'cvalue' is never read" > Unused assignments should be removed c:S1854 https://sonarcloud.io/project/issues?pullRequest=97152&\ open=AZnAZi4C7BgzESPFIGwf&id=zephyrproject-rtos_zephyr Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>

Author: cfriedt

samples/subsys/shell/shell_module/src/main.c

@@ -110,7 +110,6 @@ static int cmd_demo_getopt_ts(const struct shell *sh, size_t argc,
  char **argv)
 {
 struct getopt_state *state;
-char *cvalue = NULL;
 int aflag = 0;
 int bflag = 0;
 int c;
@@ -125,7 +124,6 @@ static int cmd_demo_getopt_ts(const struct shell *sh, size_t argc,
 bflag = 1;
 break;
 case 'c':
-cvalue = state->optarg;
 break;
 case 'h':
 /* When getopt is active shell is not parsing
@@ -161,7 +159,6 @@ static int cmd_demo_getopt_ts(const struct shell *sh, size_t argc,
 static int cmd_demo_getopt(const struct shell *sh, size_t argc,
  char **argv)
 {
-char *cvalue = NULL;
 int aflag = 0;
 int bflag = 0;
 int c;
@@ -175,7 +172,6 @@ static int cmd_demo_getopt(const struct shell *sh, size_t argc,
 bflag = 1;
 break;
 case 'c':
-cvalue = optarg;
 break;
 case 'h':
 /* When getopt is active shell is not parsing