Remove google perftools dependency

.travis.yml

@@ -12,5 +12,7 @@ addons:
 
 install:
 - export CXX="g++-5"
-- script/configure -D USE_LIBPROFILER=false
-script: script/ci
+- script/configure
+
+script:
+- script/ci

script/configure

@@ -5,15 +5,3 @@ set -e
 git submodule update --init --recursive
 externals/gyp/gyp project.gyp --depth . --format=make $@
 externals/gyp/gyp tests.gyp --depth . --format=make $@
-
-if [ "$1" == "-h" ]; then
-  cat <<-HELP
-
-Variables:
-
--D USE_LIBPROFILER=false
-  Don't link libprofiler into the test binaries. This flag is needed on systems
-  where libprofiler (from the google-perftools package) is not installed.
-
-HELP
-fi

tests.gyp

@@ -42,14 +42,6 @@
       'ldflags': [
         '-g',
       ],
-      'variables': {
-        'USE_LIBPROFILER%': 'true',
-      },
-      'conditions': [
-        ['USE_LIBPROFILER != "false"', {
-          'libraries': ['-lprofiler'],
-        }]
-      ],
       'xcode_settings': {
         'CLANG_CXX_LANGUAGE_STANDARD': 'c++11',
         'OTHER_LDFLAGS': ['-g'],