Revert "Link pthreads when linking statically."

This reverts commit 2c7082a7

CMakeLists.txt

@@ -21,9 +21,6 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
     add_link_options(-fuse-ld=lld)
 endif ()
 
-set(THREADS_PREFER_PTHREAD_FLAG ON)
-find_package(Threads REQUIRED)
-
 if (WINDOWS)
     SET(CMAKE_SYSTEM_NAME Windows)
     ADD_DEFINITIONS(-D WINDOWS=1)
@@ -130,7 +127,7 @@ endif ()
 
 if (STATICC)
     message(STATUS "Linking C library statically")
-    SET(_LINKS ${_LINKS} -static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lpthread)
+    SET(_LINKS ${_LINKS} -static-libgcc -static-libstdc++)
 endif()
 
 target_link_libraries(pkmnLib PUBLIC ${_LINKS})