Automerge: Revert "[lldb][RPC] Upstream lldb-rpc-gen tool" (#146969)

Reverts llvm/llvm-project#138031. This is failing during the build phase
on the Ubuntu buildbot:
```
Error while processing /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/API/SBWatchpoint.h.
[78/78] Processing file /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/API/SBWatchpointOptions.h.
warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-class-memaccess'; did you mean '-Wno-class-varargs'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-stringop-truncation'; did you mean '-Wno-format-truncation'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-class-memaccess'; did you mean '-Wno-class-varargs'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-stringop-truncation'; did you mean '-Wno-format-truncation'? [-Wunknown-warning-option]
In file included from /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/API/SBWatchpointOptions.h:12:
In file included from /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/API/SBDefines.h:12:
In file included from /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/lldb-defines.h:12:
In file included from /home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/lldb-types.h:12:
/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/lldb/include/lldb/lldb-enumerations.h:12:10: fatal error: 'cstdint' file not found
   12 | #include <cstdint>
      |          ^~~~~~~~~
```

Author: chelcassanova

lldb/cmake/modules/LLDBConfig.cmake

@@ -323,6 +323,4 @@ else()
     set(LLDB_CAN_USE_DEBUGSERVER OFF)
 endif()
 
-set(LLDB_BUILD_LLDBRPC ON CACHE BOOL "")
-
 include(LLDBGenerateConfig)

lldb/test/CMakeLists.txt

@@ -132,10 +132,6 @@ if(TARGET lldb-framework)
   add_lldb_test_dependency(lldb-framework)
 endif()
 
-if (LLDB_BUILD_LLDBRPC)
-  add_lldb_test_dependency(lldb-rpc-generate-sources)
-endif()
-
 # Add dependencies that are not exported targets when building standalone.
 if(NOT LLDB_BUILT_STANDALONE)
   add_lldb_test_dependency(
@@ -253,8 +249,7 @@ llvm_canonicalize_cmake_booleans(
   LLDB_TEST_SHELL_DISABLE_REMOTE
   LLDB_TOOL_LLDB_SERVER_BUILD
   LLDB_USE_SYSTEM_DEBUGSERVER
-  LLDB_IS_64_BITS
-  LLDB_BUILD_LLDBRPC)
+  LLDB_IS_64_BITS)
 
 # Configure the individual test suites.
 add_subdirectory(API)

lldb/test/Shell/RPC/Generator/Inputs/SBDummy.h

@@ -156,16 +156,6 @@ def use_lldb_substitutions(config):
             extra_args=["platform"],
             unresolved="ignore",
         ),
-        ToolSubst(
-            "%lldb-rpc-gen",
-            command=FindTool("lldb-rpc-gen"),
-            # We need the LLDB build directory root to pass into the tool, not the test build root.
-            extra_args=[
-                "-p " + config.lldb_build_directory + "/..",
-                '--extra-arg="-resource-dir=' + config.clang_resource_dir + '"',
-            ],
-            unresolved="ignore",
-        ),
         "lldb-test",
         "lldb-dap",
         ToolSubst(

lldb/test/Shell/RPC/Generator/Tests/CheckRPCGenToolByproducts.test

@@ -33,7 +33,6 @@ config.lldb_build_directory = "@LLDB_TEST_BUILD_DIRECTORY@"
 config.have_lldb_server = @LLDB_TOOL_LLDB_SERVER_BUILD@
 config.lldb_system_debugserver = @LLDB_USE_SYSTEM_DEBUGSERVER@
 config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@"
-config.lldb_has_lldbrpc = @LLDB_BUILD_LLDBRPC@
 # The shell tests use their own module caches.
 config.lldb_module_cache = os.path.join("@LLDB_TEST_MODULE_CACHE_LLDB@", "lldb-shell")
 config.clang_module_cache = os.path.join("@LLDB_TEST_MODULE_CACHE_CLANG@", "lldb-shell")

lldb/test/Shell/RPC/Generator/lit.local.cfg

@@ -10,9 +10,6 @@ add_subdirectory(lldb-fuzzer EXCLUDE_FROM_ALL)
 
 add_lldb_tool_subdirectory(lldb-instr)
 add_lldb_tool_subdirectory(lldb-dap)
-if (LLDB_BUILD_LLDBRPC)
-  add_lldb_tool_subdirectory(lldb-rpc)
-endif()
 
 if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
   add_lldb_tool_subdirectory(darwin-debug)