opensnoop: Remove 'delta' and 'cont' variables

... since they are unused.

Signed-off-by: KarimAllah Ahmed <[email protected]>

tools/opensnoop.py

@@ -53,7 +53,6 @@
 struct data_t {
  u32 pid;
  u64 ts;
- u64 delta;
  int ret;
  char comm[TASK_COMM_LEN];
  char fname[NAME_MAX];
@@ -95,7 +94,6 @@
  bpf_probe_read(&data.comm, sizeof(data.comm), valp->comm);
  bpf_probe_read(&data.fname, sizeof(data.fname), (void *)valp->fname);
  data.pid = valp->pid;
- data.delta = tsp - valp->ts;
  data.ts = tsp / 1000;
  data.ret = PT_REGS_RC(ctx);
 
@@ -126,7 +124,6 @@ class Data(ct.Structure):
  _fields_ = [
  ("pid", ct.c_ulonglong),
  ("ts", ct.c_ulonglong),
- ("delta", ct.c_ulonglong),
  ("ret", ct.c_int),
  ("comm", ct.c_char * TASK_COMM_LEN),
  ("fname", ct.c_char * NAME_MAX)
@@ -147,7 +144,6 @@ def print_event(cpu, data, size):
  global start_ts
  global prev_ts
  global delta
- global cont
 
  # split return value into FD and errno columns
  if event.ret >= 0: