[lldb] Remove "error:" prefix from reverse execute error messages

Errors will get "error:" prefixes automatically so this is not needed.

Author: DavidSpickett

lldb/include/lldb/Target/Process.h

@@ -1114,10 +1114,9 @@ class Process : public std::enable_shared_from_this<Process>,
   virtual Status DoResume(lldb::RunDirection direction) {
     if (direction == lldb::RunDirection::eRunForward)
       return Status::FromErrorStringWithFormatv(
-          "error: {0} does not support resuming processes", GetPluginName());
+          "{0} does not support resuming processes", GetPluginName());
     return Status::FromErrorStringWithFormatv(
-        "error: {0} does not support reverse execution of processes",
-        GetPluginName());
+        "{0} does not support reverse execution of processes", GetPluginName());
   }
 
   /// Called after resuming a process.

lldb/source/API/SBProcess.cpp

@@ -590,7 +590,7 @@ SBError SBProcess::ContinueInDirection(RunDirection direction) {
     if (direction == RunDirection::eRunReverse &&
         !process_sp->SupportsReverseDirection())
       return Status::FromErrorStringWithFormatv(
-          "error: {0} does not support reverse execution of processes",
+          "{0} does not support reverse execution of processes",
           GetPluginName());
     process_sp->SetBaseDirection(direction);
   }

lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp

@@ -403,8 +403,7 @@ Status ProcessKDP::DoResume(RunDirection direction) {
 
   if (direction == RunDirection::eRunReverse)
     return Status::FromErrorStringWithFormatv(
-        "error: {0} does not support reverse execution of processes",
-        GetPluginName());
+        "{0} does not support reverse execution of processes", GetPluginName());
 
   // Only start the async thread if we try to do any process control
   if (!m_async_thread.IsJoinable())

lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp

@@ -242,8 +242,7 @@ Status ProcessWindows::DoResume(RunDirection direction) {
 
   if (direction == RunDirection::eRunReverse) {
     return Status::FromErrorStringWithFormatv(
-        "error: {0} does not support reverse execution of processes",
-        GetPluginName());
+        "{0} does not support reverse execution of processes", GetPluginName());
   }
 
   Status error;

lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp

@@ -191,8 +191,7 @@ Status ScriptedProcess::DoResume(RunDirection direction) {
     return GetInterface().Resume();
   // FIXME: Pipe reverse continue through Scripted Processes
   return Status::FromErrorStringWithFormatv(
-      "error: {0} does not support reverse execution of processes",
-      GetPluginName());
+      "{0} does not support reverse execution of processes", GetPluginName());
 }
 
 Status ScriptedProcess::DoAttach(const ProcessAttachInfo &attach_info) {