chore(merge): drop dead leftovers from the upstream merge

Post-merge audit found code the merge left unreferenced:

- SettingsRepo: keySatelliteUrls / keyTransceiversUrls / separatorUrl were
  upstream's list-shaped data-source keys. The merge kept the fork's map-shaped
  DataSourcesSettings, so these three had a definition and zero uses.
- feature/status/res/drawable/ic_refresh.xml: SatStatusScreen imports
  core.presentation.R only, so its R.drawable.ic_refresh resolves to the
  core copy; the feature-local copy was never addressable. It was the only
  file under feature/status/src/main/res, so the directory goes with it.

Verified zero references with a repo-wide grep before removing each symbol.
compileReleaseKotlin plus core:domain / core:data / feature:map /
feature:roaming unit tests stay green.

core/data/src/main/java/com/rtbishop/look4sat/core/data/repository/SettingsRepo.kt

@@ -105,11 +105,8 @@ class SettingsRepo(
     private val keyWavelogAutoUpload = "wavelogAutoUpload"
     private val keyRadarCompassOffset = "radarCompassOffset"
     private val keyRadarCompassOffsetElev = "radarCompassOffsetElev"
-    private val keySatelliteUrls = "satelliteUrls"
-    private val keyTransceiversUrls = "transceiversUrls"
 
     private val separatorComma = ","
-    private val separatorUrl = "\n"
 
     //region # Satellites selection settings
     private val _satelliteSelection = MutableStateFlow(getSelectedIds())