[lldb] Remove unused lldb.cpp

[hokein]

Summary

lldb.cpp is unused after https://github.com/llvm/llvm-project/commit/ccf1469a4cdb03cb2bc7868f76164e85d90ebee1

[JDevlieghere]

Thanks!

lldb/source/lldb.cpp

-//===-- lldb.cpp ----------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "VCSVersion.inc"
-#include "lldb/lldb-private.h"
-#include "clang/Basic/Version.h"
-
-using namespace lldb;
-using namespace lldb_private;
-
-// LLDB_VERSION_STRING is set through a define so unlike the other defines
-// expanded with CMake, it lacks the double quotes.
-#define QUOTE(str) #str
-#define EXPAND_AND_QUOTE(str) QUOTE(str)
-
-static const char *GetLLDBVersion() {
-#ifdef LLDB_VERSION_STRING
-  return EXPAND_AND_QUOTE(LLDB_VERSION_STRING);
-#else
-  return "lldb version " CLANG_VERSION_STRING;
-#endif
-}
-
-static const char *GetLLDBRevision() {
-#ifdef LLDB_REVISION
-  return LLDB_REVISION;
-#else
-  return NULL;
-#endif
-}
-
-static const char *GetLLDBRepository() {
-#ifdef LLDB_REPOSITORY
-  return LLDB_REPOSITORY;
-#else
-  return NULL;
-#endif
-}
-
-const char *lldb_private::GetVersion() {
-  static std::string g_version_str;
-  if (g_version_str.empty()) {
-    const char *lldb_version = GetLLDBVersion();
-    const char *lldb_repo = GetLLDBRepository();
-    const char *lldb_rev = GetLLDBRevision();
-    g_version_str += lldb_version;
-    if (lldb_repo || lldb_rev) {
-      g_version_str += " (";
-      if (lldb_repo)
-        g_version_str += lldb_repo;
-      if (lldb_repo && lldb_rev)
-        g_version_str += " ";
-      if (lldb_rev) {
-        g_version_str += "revision ";
-        g_version_str += lldb_rev;
-      }
-      g_version_str += ")";
-    }
-
-    std::string clang_rev(clang::getClangRevision());
-    if (clang_rev.length() > 0) {
-      g_version_str += "\n  clang revision ";
-      g_version_str += clang_rev;
-    }
-    std::string llvm_rev(clang::getLLVMRevision());
-    if (llvm_rev.length() > 0) {
-      g_version_str += "\n  llvm revision ";
-      g_version_str += llvm_rev;
-    }
-  }
-  return g_version_str.c_str();
-}