Strip trailing whitespace from log lines

Log lines coming from the Rust SDK have a trailing newline, meaning that when
we emit them, we get a blank line in the logs. To prevent this, strip off
trailing whitespace.

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/OlmMachine.kt

@@ -95,7 +95,7 @@ import org.matrix.rustcomponents.sdk.crypto.ProgressListener as RustProgressList
 
 class CryptoLogger : Logger {
     override fun log(logLine: String) {
-        Timber.d(logLine)
+        Timber.d(logLine.trimEnd())
     }
 }