[bugfix] Resolves Android build warnings

[bugfix] Resolves Android build warnings

This PR resolves warnings that occur during the Android build. The list is as follows.

**Changes proposed in this PR:**
- Resolves explicitly defaulted function is implicitly deleted.
- Fix function that overrides virtual functions but is not marked override.
- Resolves clang warning on expression side effects.

**Self-evaluation:**
1. Build test: [X]Passed [ ]Failed [ ]Skipped
2. Run test:   [X]Passed [ ]Failed [ ]Skipped

Signed-off-by: Donghyeon Jeong <dhyeon.jeong@samsung.com>