remove multimodal as this is completely dead code (#17750)

sgl-model-gateway/Cargo.toml

@@ -40,7 +40,6 @@ serde_json = { version = "1.0", default-features = false, features = [
     "std",
     "preserve_order",
 ] }
-serde_bytes = "0.11"
 bytes = "1.8.0"
 http-body = "1.0"
 rand = "0.9.2"
@@ -48,7 +47,6 @@ reqwest = { version = "0.12.8", features = ["stream", "blocking", "json", "rustl
 futures-util = "0.3"
 futures = "0.3"
 dashmap = "6.1.0"
-lru = "0.16.2"
 blake3 = "1.5"
 xxhash-rust = { version = "0.8", features = ["xxh3"] }
 bytemuck = { version = "1.21", features = ["derive"] }
@@ -98,13 +96,10 @@ rmcp = { version = "0.8.3", features = ["client", "server",
     "reqwest",
     "auth"] }
 serde_yaml = "0.9"
-oracle = { version = "0.6.3", features = ["chrono"] }
 subtle = "2.6"
 jsonwebtoken = { version = "9.3", default-features = false, features = ["use_pem"] }
 num-traits = "0.2"
 num-bigint = "0.4"
-image = { version = "0.25.4", default-features = false, features = ["png", "jpeg", "gif", "bmp", "ico", "tiff", "webp"] }
-ndarray = "0.16"
 base64 = "0.22"
 openai-harmony = { git = "https://github.com/openai/harmony", tag = "v0.0.4" }
 openmetrics-parser = "0.4.4"
@@ -115,17 +110,12 @@ tonic = { version = "0.14.2", features = ["gzip", "transport"] }
 prost = "0.14.1"
 prost-types = "0.14.1"
 tonic-prost = "0.14.2"
-deadpool = { version = "0.12", features = ["managed", "rt_tokio_1"] }
-backoff = { version = "0.4", features = ["tokio"] }
-strum = { version = "0.26", features = ["derive"] }
 bitflags = "2.10.0"
 once_cell = "1.21.3"
-tokio-postgres = { version = "0.7.15", features = ["runtime","with-chrono-0_4","with-serde_json-1","array-impls"] }
-deadpool-postgres = "0.14.1"
+
 # CRDT for Mesh state synchronization
 crdts = "7.3"
 redis = { version = "0.27.6", features = ["tokio-comp", "json", "connection-manager"] }
-deadpool-redis = "0.18.0"
 
 
 # wasm dependencies