[BACKEND] [BUILD] Fix iluvatar build in editable mode (#167)

* [BACKEND] [BUILD] Fix iluvatar build in editable mode
* [BUILD] Add filelock to requirements

Author: zhzhcookie

python/requirements.txt

@@ -4,3 +4,4 @@ wheel
 GitPython
 pytest
 scipy
+filelock

third_party/iluvatar/CMakeLists.txt

@@ -2,11 +2,7 @@ add_compile_options("-Wno-deprecated-declarations")
 add_compile_options("-Wno-error=deprecated-declarations")
 
 option(EDITABLE_MODE "Build in developer (editable) mode" OFF)
-if(EDITABLE_MODE)
-  set(ILUVATAR_PLUGIN_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
-else()
-  set (ILUVATAR_PLUGIN_DIR "${Python3_SITELIB}/triton/_C")
-endif()
+set (ILUVATAR_PLUGIN_DIR "${Python3_SITELIB}/triton/_C")
 if(TRITON_BUILD_PYTHON_MODULE)
   if(FLAGTREE_PLUGIN)
     add_subdirectory(plugin)