Revert "[lldb][target] Add progress report for wait-attaching to process" (#144810)

This is breaking TestCreateAfterAttach.py on Ubuntu:

```
======================================================================
FAIL: test_create_after_attach_dwo (TestCreateAfterAttach.CreateAfterAttachTestCase.test_create_after_attach_dwo)
   Test thread creation after process attach.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 1804, in test_method
    return attrvalue(self)
           ^^^^^^^^^^^^^^^
  File "/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/packages/Python/lldbsuite/test/decorators.py", line 149, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/test/API/functionalities/thread/create_after_attach/TestCreateAfterAttach.py", line 36, in test_create_after_attach
    self.runCmd("process attach -p " + str(pid))
  File "/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 1005, in runCmd
    self.assertTrue(self.res.Succeeded(), msg + output)
AssertionError: False is not true : Command 'process attach -p 1474309' did not return successfully
Error output:
error: attach failed: lost connection
```

on the buildbots for lldb-remote-linux-ubuntu, lldb-arm-ubuntu,
lldb-aarch64-ubuntu, lldb-arm-ubuntu.

1 files changed, 0 insertions, 1 deletions

diff --git a/lldb/source/Target/Target.cpp b/lldb/source/Target/Target.cpp
index 8f8d2ef21cc5..45a9e1196a04 100644
--- a/lldb/source/Target/Target.cpp
+++ b/lldb/source/Target/Target.cpp
@@ -3546,7 +3546,6 @@ llvm::Expected<TraceSP> Target::GetTraceOrCreate() {
 }
 
 Status Target::Attach(ProcessAttachInfo &attach_info, Stream *stream) {
-  Progress attach_progress("Waiting to attach to process");
   m_stats.SetLaunchOrAttachTime();
   auto state = eStateInvalid;
   auto process_sp = GetProcessSP();