rtabmap: remove SDK paths from CMake config files

[cho-m]

Need #208051 first. Dropped OpenCV change. Can handle in separate PR.

Different approach than #208060 as only #{sdk_path}/usr/include is used which is a default path and safe to remove (same behavior in our pkgconf formula).

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Should help reduce noise in dependent tests output:

`brew test --retry --verbose rtabmap` failed on macOS Sequoia (15) on Apple Silicon!
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/cmath:316:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/limits:819:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/type_traits:425:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/__type_traits/add_pointer.h:17:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/__type_traits/remove_reference.h:13:
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/c++/v1/cstddef:46:5: error: <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header.           This usually means that your header search paths are not configured properly.           The header search paths should contain the C++ Standard Library headers before           any C Standard Library, and you are probably using compiler flags that make that           not be the case.
   46 | #   error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \
      |     ^

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