Remove unused dependencies from Project.toml

Remove Downloads, MultiGridBarrier, OpenBLAS32_jll, SCALAPACK32_jll, Scratch
and their compat entries. These were not used in src/.

Author: Sébastien Loisel

Project.toml

@@ -4,25 +4,16 @@ authors = ["Sébastien Loisel <S.Loisel@hw.ac.uk>"]
 version = "0.1.17"
 
 [deps]
-Downloads = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MPI = "da04e1cc-30fd-572f-bb4f-1f8673147195"
-MultiGridBarrier = "9e2c1f1d-9131-4ad4-b32f-bd2a0b0ecd1e"
-OpenBLAS32_jll = "656ef2d0-ae68-5445-9ca0-591084a874a2"
 PETSc = "ace2c81b-2b5f-4b1e-a30d-d662738edfe0"
-SCALAPACK32_jll = "aabda75e-bfe4-5a37-92e3-ffe54af3c273"
 SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
-Scratch = "6c6a2e73-6563-6170-7368-637461726353"
 Serialization = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
 MPI = "0.20"
-MultiGridBarrier = "0.11.25"
-OpenBLAS32_jll = "0.3"
 PETSc = "0.3.1"
-SCALAPACK32_jll = "2.2"
-Scratch = "1"
 julia = "1.10"
 
 [extras]