Remove unhelpful axi wrapper runt tests and cocotb tests (#2515)

This PR gets rid of the yxi-based wrapper runt tests mentioned in #2233.

These files tried to snapshot "steps" in the process of going from a
calyx program to AXI based cocotb testing, but the process for updating
was manual (updating snapshots one at a time then copying the new
`*.expect` to the correct `*.file-suffix`) and error prone. (Forgetting
to update a `*.file-suffix` would just leave the tests passing). Once
work starts up on AXI again I do think something in the spirit of these
tests would be useful to have. The cocotb axi tests working is a good
starting point to making sure that the AXI wrappers are [at least
partially] correct.

With the changes introduced in #2516 being not well tested, I think it
makes sense to get rid of these tests, as long as we want to merge those
changes as well.

Some more context in
[zulip](https://calyx.zulipchat.com/#narrow/channel/445339-calyx-yxi/topic/AXI.20Controller/near/528563512)

Author: nathanielnrn

runt.toml

@@ -626,44 +626,6 @@ fud2  {} -s sim.cycle_limit=500 \
          --to dat -q
 """
 
-##### Calyx AXI tests #####
-[[tests]]
-name = "calyx-py read-write-compute AXI wrapper generation"
-paths = ["yxi/tests/axi/read-compute-write/*.yxi"]
-cmd = """
-python3 yxi/axi-calyx/axi_generator.py {}
-"""
-
-[[tests]]
-name = "calyx-py dynamic AXI wrapper generation"
-paths = ["yxi/tests/axi/dynamic/*.yxi"]
-cmd = """
-python3 yxi/axi-calyx/dynamic_axi_generator.py {}
-"""
-
-#Ignore fud2 stderr for now due to ninja nondeterminism
-[[tests]]
-name = "fud2 AXI wrapper invocation"
-paths = ["yxi/tests/axi/*/*-mem-vec-add.futil"]
-cmd = """
-dynamic=$(head -n 2 {} | tail -n 1 | cut -c 4-)
-fud2 {} --to calyx --through axi-wrapped --set $dynamic 2> /dev/null
-"""
-
-[[tests]]
-name = "fud2 AXI-wrapped to verilog"
-paths = ["yxi/tests/axi/*/*-mem-vec-add-axi-wrapped.futil"]
-cmd = """
-fud2 {} --from calyx --to verilog-noverify 2> /dev/null
-"""
-
-[[tests]]
-name = "fud2 cocotb AXI-wrapped xecution"
-paths = ["yxi/tests/axi/*/*-mem-vec-add-verilog.v"]
-cmd = """
-fud2 {} --from verilog-noverify --to cocotb-axi --set sim.data=yxi/tests/axi/vectorized-add.data 2> /dev/null
-"""
-
 ##### Xilinx Tests ######
 [[tests]]
 name = "AXI wrapper generation"
@@ -683,7 +645,7 @@ target/debug/calyx {} -b xilinx-xml
 
 [[tests]]
 name = "kernel.xml generation from yxi"
-paths = ["yxi/tests/axi/xml/*.yxi"]
+paths = ["yxi/tests/axi/xml-gen/*.yxi"]
 cmd = """
 python3 yxi/xml/xml_generator.py {}
 """