Remove redecleration of function

Author: cheesema

test/ExamplesTest.cpp

@@ -107,15 +107,6 @@ class CreateGTSmall1DTest : public CreateAPRTest
 };
 
 
-std::string get_source_directory_apr(){
-    // returns path to the directory where utils.cpp is stored
-
-    std::string tests_directory = std::string(__FILE__);
-    tests_directory = tests_directory.substr(0, tests_directory.find_last_of("\\/") + 1);
-
-    return tests_directory;
-}
-
 void CreateGTSmallTest::SetUp(){
 
     std::string file_name = get_source_directory_apr() + "files/Apr/sphere_small/original.tif";