You can remove any saved title directly from your Library.
On iOS:
Go to the Library section.
Tap on Saved.
Find the title and tap the three dots next to it.
Select Remove from Library.
On Android:
Open My Library.
Tap on Saved.
Tap the three dots next to the title.
Select Remove from Saved.
This action only removes the title from your saved list — you can always find it again by searching.