Don't set output directories

This can lead to inconsistencies when another project embeds SOCI which
especially on Windows are likely to lead to issues when SOCI is built as
a DLL.

Fixes SOCI#1159

CMakeLists.txt

@@ -73,11 +73,6 @@ if (SOCI_LD)
   add_link_options("${USE_LD_FLAG}")
 endif()
 
-# Ensure that libraries and executables end up at the top of the build tree
-set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
-set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-
 if (SOCI_SHARED)
   set(SOCI_LIB_TYPE "SHARED")
 else()