I’ve run into similar issues before. Even after removing Skia from the project, some leftover references or paths can still cause the build to look for libisk4d.so. A few things you could try:
Clean your project completely (Build → Clean or delete the Android\Release folder manually).
Check the deployment settings to make sure Skia is no longer listed anywhere.
Rebuild the project from scratch after cleaning, so Delphi stops trying to include that library.
Usually, doing a full clean and double-checking the deployment paths fixes this kind of leftover dependency problem.