refactor: cleanup config

Signed-off-by: Alexis Asseman <alexis@semiotic.ai>

Author: aasseman

tap-agent/src/config.rs

@@ -45,13 +45,6 @@ pub struct Cli {
 #[derive(Clone, Debug, Args, Serialize, Deserialize, Default)]
 #[group(required = true, multiple = true)]
 pub struct Ethereum {
-    #[clap(
-        long,
-        value_name = "mnemonic",
-        env = "MNEMONIC",
-        help = "Mnemonic for the operator wallet"
-    )]
-    pub mnemonic: String,
     #[clap(
         long,
         value_name = "indexer-address",
@@ -81,7 +74,7 @@ pub struct Receipts {
 }
 
 #[derive(Clone, Debug, Args, Serialize, Deserialize, Default)]
-#[group(required = true, multiple = true)]
+#[group(multiple = true)]
 pub struct IndexerInfrastructure {
     #[clap(
         long,
@@ -162,7 +155,7 @@ pub struct Postgres {
 }
 
 #[derive(Clone, Debug, Args, Serialize, Deserialize, Default)]
-#[group(required = true, multiple = true)]
+#[group(multiple = true)]
 pub struct NetworkSubgraph {
     #[clap(
         long,