Remove not needed tests

diff --git a/tests/arch/ice40/alu.v b/tests/arch/ice40/alu.v
deleted file mode 100644
index f82cc2e..0000000
--- a/tests/arch/ice40/alu.v
+++ /dev/null

@@ -1,19 +0,0 @@
-module top (
-	input clock,
-	input [31:0] dinA, dinB,
-	input [2:0] opcode,
-	output reg [31:0] dout
-);
-	always @(posedge clock) begin
-		case (opcode)
-		0: dout <= dinA + dinB;
-		1: dout <= dinA - dinB;
-		2: dout <= dinA >> dinB;
-		3: dout <= $signed(dinA) >>> dinB;
-		4: dout <= dinA << dinB;
-		5: dout <= dinA & dinB;
-		6: dout <= dinA | dinB;
-		7: dout <= dinA ^ dinB;
-		endcase
-	end
-endmodule

diff --git a/tests/arch/ice40/alu.ys b/tests/arch/ice40/alu.ys
deleted file mode 100644
index bd859ef..0000000
--- a/tests/arch/ice40/alu.ys
+++ /dev/null

@@ -1,11 +0,0 @@
-read_verilog alu.v
-hierarchy -top top
-proc
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 62 t:SB_CARRY
-select -assert-count 32 t:SB_DFF
-select -assert-count 655 t:SB_LUT4
-select -assert-none t:SB_CARRY t:SB_DFF t:SB_LUT4 %% t:* %D

diff --git a/tests/arch/ice40/div_mod.v b/tests/arch/ice40/div_mod.v
deleted file mode 100644
index 64a3670..0000000
--- a/tests/arch/ice40/div_mod.v
+++ /dev/null

@@ -1,13 +0,0 @@
-module top
-(
- input [3:0] x,
- input [3:0] y,
-
- output [3:0] A,
- output [3:0] B
- );
-
-assign A =  x % y;
-assign B =  x / y;
-
-endmodule

diff --git a/tests/arch/ice40/div_mod.ys b/tests/arch/ice40/div_mod.ys
deleted file mode 100644
index 821d6c3..0000000
--- a/tests/arch/ice40/div_mod.ys
+++ /dev/null

@@ -1,9 +0,0 @@
-read_verilog div_mod.v
-hierarchy -top top
-flatten
-equiv_opt -assert -map +/ice40/cells_sim.v synth_ice40 # equivalency check
-design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
-cd top # Constrain all select calls below inside the top module
-select -assert-count 59 t:SB_LUT4
-select -assert-count 41 t:SB_CARRY
-select -assert-none t:SB_LUT4 t:SB_CARRY %% t:* %D