SDL_rtf: Remove ability to do '#include "SDL_rtf.h"'

SDL Commits
1 
From 7b8c7f529601df025839946636bbcd04309a636b Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Fri, 29 Sep 2023 18:27:10 +0200
Subject: [PATCH] Remove ability to do '#include "SDL_rtf.h"'

This reverts commit e89f570f8e6c93e2d77a9d0d915028c48f831719.
---
 CMakeLists.txt       | 3 ---
 cmake/sdl3-rtf.pc.in | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 66bfc01..29c2381 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -100,11 +100,8 @@ if(NOT TARGET SDL3_rtf::SDL3_rtf)
     add_library(SDL3_rtf::SDL3_rtf ALIAS ${sdl3_rtf_target_name})
 endif()
 target_include_directories(${sdl3_rtf_target_name} PUBLIC
-    "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>"
     "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
-    "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include/SDL3_rtf>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>"
-    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include/SDL3_rtf>"
 )
 target_compile_definitions(${sdl3_rtf_target_name} PRIVATE
     BUILD_SDL
diff --git a/cmake/sdl3-rtf.pc.in b/cmake/sdl3-rtf.pc.in
index e09a3bf..bb76bc2 100644
--- a/cmake/sdl3-rtf.pc.in
+++ b/cmake/sdl3-rtf.pc.in
@@ -8,4 +8,4 @@ Description: Support for Rich Text Format (.rtf) files with Simple Directmedia L
 Version: @PROJECT_VERSION@
 Requires: sdl3 >= @SDL_REQUIRED_VERSION@
 Libs: -L${libdir} -lSDL3_rtf
-Cflags: -I${includedir} -I${includedir}/SDL3_rtf
+Cflags: -I${includedir} @SDL_PC_CFLAGS@