Media paths are fine already, the removed lines would screw them up.

--- a/CMake/InstallResources.cmake	2019-11-06 08:09:15.185821495 +0100
+++ b/CMake/InstallResources.cmake	2019-11-06 08:10:41.169819050 +0100
@@ -145,9 +145,6 @@
 
 # CREATE CONFIG FILES - BUILD DIR VERSIONS
 if (NOT (APPLE_IOS OR WINDOWS_STORE OR WINDOWS_PHONE))
-  set(OGRE_MEDIA_DIR_REL "${PROJECT_SOURCE_DIR}/Samples/Media")
-  set(OGRE_CORE_MEDIA_DIR "${PROJECT_SOURCE_DIR}/Media")
-  set(OGRE_TEST_MEDIA_DIR_REL "${PROJECT_SOURCE_DIR}/Tests/Media")
 else ()
   # iOS needs to use relative paths in the config files
   set(OGRE_MEDIA_DIR_REL "${OGRE_MEDIA_PATH}")