Clean up many small dependencies (part 3) (#8425)

Follow-up to #8353

Release Notes:
- N/A

crates/language/Cargo.toml

@@ -12,7 +12,6 @@ doctest = false
 [features]
 test-support = [
     "rand",
-    "client/test-support",
     "collections/test-support",
     "lsp/test-support",
     "text/test-support",
@@ -24,7 +23,6 @@ test-support = [
 
 [dependencies]
 anyhow.workspace = true
-async-broadcast = "0.4"
 async-trait.workspace = true
 clock.workspace = true
 collections.workspace = true
@@ -43,7 +41,6 @@ regex.workspace = true
 rpc.workspace = true
 schemars.workspace = true
 serde.workspace = true
-serde_derive.workspace = true
 serde_json.workspace = true
 settings.workspace = true
 similar = "1.3"
@@ -52,7 +49,6 @@ smol.workspace = true
 sum_tree.workspace = true
 text.workspace = true
 theme.workspace = true
-toml.workspace = true
 tree-sitter-rust = { workspace = true, optional = true }
 tree-sitter-typescript = { workspace = true, optional = true }
 pulldown-cmark.workspace = true
@@ -61,7 +57,6 @@ unicase = "2.6"
 util.workspace = true
 
 [dev-dependencies]
-client = { workspace = true, features = ["test-support"] }
 collections = { workspace = true, features = ["test-support"] }
 ctor.workspace = true
 env_logger.workspace = true
@@ -77,7 +72,6 @@ tree-sitter-heex.workspace = true
 tree-sitter-html.workspace = true
 tree-sitter-json.workspace = true
 tree-sitter-markdown.workspace = true
-tree-sitter-python.workspace = true
 tree-sitter-ruby.workspace = true
 tree-sitter-rust.workspace = true
 tree-sitter-typescript.workspace = true