Remove unneeded target_include_directories with cmake

This could remove recurring of the same statement for include directories.
Instead of this removals, apps/* and tests  should have include path that
had been provided by INTERFACE_INCLUDE_DIRECTORIES of target libs and
internal static libs.

tests/CMakeLists.txt

@@ -6,6 +6,7 @@ include_directories(
 	../ssl
 	../apps/openssl
 	../apps/openssl/compat
+	../include
 	../include/compat
 )