Remove dup cmake

test=develop

CMakeLists.txt

@@ -81,12 +81,6 @@ option(WITH_SYSTEM_BLAS   "Use system blas library"           OFF)
 option(PY_VERSION       "Compile PaddlePaddle with python3 support"     ${PY_VERSION})
 option(WITH_FAST_MATH   "Make use of fast math library, might affect the precision to some extent" ON)
 
-if (WITH_PROFILER)
-    find_package(Gperftools REQUIRED)
-    include_directories(${GPERFTOOLS_INCLUDE_DIR})
-    add_definitions(-DWITH_GPERFTOOLS)
-endif()
-
 # PY_VERSION
 if(NOT PY_VERSION)
   set(PY_VERSION 2.7)