[#1030] Make sdk-lib gRPC objects free

- This follows our goal of having the sdk-lib module completely separated from the networking layer

lightwallet-client-lib/build.gradle.kts

@@ -111,14 +111,11 @@ protobuf {
 
 dependencies {
     implementation(libs.androidx.annotation)
+    implementation(libs.bundles.grpc)
     implementation(libs.kotlin.stdlib)
     implementation(libs.kotlinx.coroutines.core)
     implementation(libs.kotlinx.coroutines.android)
 
-    // TODO [#1030]: Make sdk-lib gRPC objects free (and then make this `implementation`)
-    // TODO [#1030]: https://github.com/zcash/zcash-android-wallet-sdk/issues/1030
-    api(libs.bundles.grpc)
-
     // Tests
     testImplementation(libs.kotlin.reflect)
     testImplementation(libs.kotlin.test)

sdk-lib/src/main/java/cash/z/ecc/android/sdk/exception/Exceptions.kt

@@ -4,10 +4,7 @@ import cash.z.ecc.android.sdk.internal.SaplingParameters
 import cash.z.ecc.android.sdk.internal.model.Checkpoint
 import cash.z.ecc.android.sdk.model.BlockHeight
 import cash.z.ecc.android.sdk.model.ZcashNetwork
-import cash.z.wallet.sdk.internal.rpc.Service
 import co.electriccoin.lightwallet.client.model.BlockHeightUnsafe
-import io.grpc.Status
-import io.grpc.Status.Code.UNAVAILABLE
 
 /**
  * Marker for all custom exceptions from the SDK. Making it an interface would result in more typing
@@ -238,29 +235,6 @@ sealed class LightWalletException(message: String, cause: Throwable? = null) : S
                 " update the SDK to match lightwalletd or use a lightwalletd that matches the SDK."
         )
 
-    open class ChangeServerException(message: String, cause: Throwable? = null) : SdkException(message, cause) {
-        class ChainInfoNotMatching(
-            val propertyNames: String,
-            val expectedInfo: Service.LightdInfo,
-            val actualInfo: Service.LightdInfo
-        ) : ChangeServerException(
-            "Server change error: the $propertyNames values did not match."
-        )
-        class StatusException(val status: Status, cause: Throwable? = null) : SdkException(status.toMessage(), cause) {
-            companion object {
-                private fun Status.toMessage(): String {
-                    return when (this.code) {
-                        UNAVAILABLE -> {
-                            "Error: the new server is unavailable. Verify that the host and port are correct. Failed " +
-                                "with $this"
-                        }
-                        else -> "Changing servers failed with status $this"
-                    }
-                }
-            }
-        }
-    }
-
     class DownloadBlockException(code: Int, description: String?, cause: Throwable) : SdkException(
         "Failed to download block with code: $code due to: ${description ?: "-"}",
         cause

sdk-lib/src/main/java/cash/z/ecc/android/sdk/internal/model/JniBlockMetaExt.kt

@@ -1,17 +0,0 @@
-package cash.z.ecc.android.sdk.internal.model
-
-import cash.z.wallet.sdk.internal.rpc.CompactFormats
-import co.electriccoin.lightwallet.client.model.CompactBlockUnsafe
-
-internal fun JniBlockMeta.Companion.new(
-    block: CompactFormats.CompactBlock,
-    outputs: CompactBlockUnsafe.CompactBlockOutputsCounts
-): JniBlockMeta {
-    return JniBlockMeta(
-        height = block.height,
-        hash = block.hash.toByteArray(),
-        time = block.time.toLong(),
-        saplingOutputsCount = outputs.saplingOutputsCount.toLong(),
-        orchardOutputsCount = outputs.orchardActionsCount.toLong()
-    )
-}