Removed LTE_CA from Annotations

Teams need to directly link to Annotations and having
a @hide as a const prevents that @SystemApi methods from
doing this.

Bug: 146084549
Test: FrameworkServiceTests
Merged-In: I2d6ad7621560ef73b10d6eb861c44700b27a2ea6
Change-Id: I2d6ad7621560ef73b10d6eb861c44700b27a2ea6