Remove unnecessary dependency from Cargo.toml

cross/Cargo.lock

@@ -54,12 +54,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
 
-[[package]]
-name = "bbqueue"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd3baa8859d1a4c7411039a75c0599a4640ef1c9a8fc811e4325b00e6cfe0a55"
-
 [[package]]
 name = "bit_field"
 version = "0.10.1"
@@ -82,7 +76,6 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 name = "blue_pill_ui"
 version = "0.1.0"
 dependencies = [
- "bbqueue",
  "cortex-m-rtic",
  "panic-rtt-target",
  "rtt-target",

cross/Cargo.toml

@@ -13,7 +13,6 @@ rtt-target = { version = "0.3.1", features = ["cortex-m"] }
 stm32f1xx-hal = { version = "0.9.0", features = ["rt", "stm32f103", "medium"] }
 ssd1306 = "0.7.0"
 switch-hal = "0.4.0"
-bbqueue = "0.5.1"
 ui = { path = "../ui" }
 
 [[bin]]