also remove the bad similarity search benchmark

Signed-off-by: Connor Tsui <connor.tsui20@gmail.com>

Author: connortsui20

vortex-tensor/Cargo.toml

@@ -37,8 +37,3 @@ rand = { workspace = true }
 rand_distr = { workspace = true }
 rstest = { workspace = true }
 vortex-btrblocks = { path = "../vortex-btrblocks" }
-
-[[bench]]
-name = "similarity_search"
-harness = false
-test = false