Fix duckdb build failure

Upgrade FBOS dependencies to 2024.09.16.00 installs all dependencies in
deps-install subfolder, and set the include directory to it in front of
other include directories. This caused duckdb build failed with "error:
use of undeclared identifier 'FMT_SNPRINTF'". This commit removes the
BEFORE keyword to fix the problem.

CMakeLists.txt

@@ -48,9 +48,6 @@ endif()
 if(DEFINED ENV{INSTALL_PREFIX})
   message(STATUS "Dependency install directory set to: $ENV{INSTALL_PREFIX}")
   list(APPEND CMAKE_PREFIX_PATH "$ENV{INSTALL_PREFIX}")
-  # Allow installed package headers to be picked up before brew/system package
-  # headers
-  include_directories(BEFORE "$ENV{INSTALL_PREFIX}/include")
 endif()
 
 list(PREPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMake"