Remove shadow testing framework

Bitrotten and apparently doesn't work with libuv event loop.

CMakeLists.txt

@@ -51,7 +51,6 @@ option(USE_NETNS "enable networking namespace support. Linux only" OFF)
 option(NATIVE_BUILD "optimise for host system and FPU" ON)
 option(EMBEDDED_CFG "optimise for older hardware or embedded systems" OFF)
 option(BUILD_LIBLOKINET "build liblokinet.so" ON)
-option(SHADOW "use shadow testing framework. linux only" OFF)
 option(XSAN "use sanitiser, if your system has it (requires -DCMAKE_BUILD_TYPE=Debug)" OFF)
 option(USE_JEMALLOC "Link to jemalloc for memory allocations, if found" ON)
 option(TESTNET "testnet build" OFF)
@@ -178,10 +177,6 @@ if(NOT APPLE)
   endif()
 endif()
 
-if (NOT CMAKE_SYSTEM_NAME MATCHES "Linux" AND SHADOW)
-  message( FATAL_ERROR "shadow-framework is Linux only" )
-endif()
-
 if(XSAN)
   string(APPEND CMAKE_CXX_FLAGS_DEBUG " -fsanitize=${XSAN} -fno-omit-frame-pointer -fno-sanitize-recover")
   foreach(type EXE MODULE SHARED STATIC)
@@ -229,10 +224,6 @@ if(TESTNET)
   # add_definitions(-DTESTNET_SPEED=5)
 endif()
 
-if(SHADOW)
-  include(cmake/shadow.cmake)
-endif()
-
 unset(GIT_VERSION)
 unset(GIT_VERSION_REAL)
 
@@ -300,13 +291,11 @@ endif()
 if(WITH_HIVE)
   add_subdirectory(pybind)
 endif()
-if (NOT SHADOW)
-  if(WITH_TESTS OR WITH_HIVE)
-    add_subdirectory(test)
-  endif()
-  if(ANDROID)
-    add_subdirectory(jni)
-  endif()
+if(WITH_TESTS OR WITH_HIVE)
+  add_subdirectory(test)
+endif()
+if(ANDROID)
+  add_subdirectory(jni)
 endif()
 
 add_subdirectory(docs)

llarp/CMakeLists.txt

@@ -227,10 +227,6 @@ if(TRACY_ROOT)
   target_sources(liblokinet PRIVATE ${TRACY_ROOT}/TracyClient.cpp)
 endif()
 
-if(TESTNET)
-  target_sources(liblokinet PRIVATE testnet.c)
-endif()
-
 if(WITH_HIVE)
   target_sources(liblokinet PRIVATE
     tooling/router_hive.cpp