remove legacy EIGEN_USE_THREADS, WITH_ARM_FP16 options

CMakeLists.txt

@@ -61,8 +61,6 @@ option(COVERALLS_UPLOAD "Package code coverage data to coveralls"       OFF)
 option(WITH_FLUID_ONLY  "Compile PaddlePaddle fluid only"               OFF)
 option(WITH_DISTRIBUTE  "Compile with distributed support"              OFF)
 option(WITH_PSLIB       "Compile with pslib support"                    OFF)
-option(EIGEN_USE_THREADS "Compile with multi-threaded Eigen"            OFF)
-option(WITH_ARM_FP16    "Use half precision support on armv8.2-a cpu"   OFF)
 option(WITH_CONTRIB     "Compile the third-party contributation"        OFF)
 option(REPLACE_ENFORCE_GLOG "Replace PADDLE_ENFORCE with glog/CHECK for better debug." OFF)
 option(WITH_ANAKIN      "Compile with Anakin library"                   OFF)

cmake/configure.cmake

@@ -20,19 +20,10 @@ if(WITH_DSO)
     add_definitions(-DPADDLE_USE_DSO)
 endif(WITH_DSO)
 
-if(WITH_ARM_FP16)
-    add_definitions(-DPADDLE_ARM_FP16)
-    add_definitions("-march=armv8.2-a+fp16+simd")
-endif(WITH_ARM_FP16)
-
 if(WITH_TESTING)
     add_definitions(-DPADDLE_WITH_TESTING)
 endif(WITH_TESTING)
 
-if(EIGEN_USE_THREADS)
-    add_definitions(-DEIGEN_USE_THREADS)
-endif(EIGEN_USE_THREADS)
-
 if(NOT WITH_PROFILER)
     add_definitions(-DPADDLE_DISABLE_PROFILER)
 endif(NOT WITH_PROFILER)