Subzero: Delete szdiff.py tests and ERRORS tests.

tests_lit/llvm2ice_tests/return-int-arg.ll

Index: tests_lit/llvm2ice_tests/return-int-arg.ll
diff --git a/tests_lit/llvm2ice_tests/return-int-arg.ll b/tests_lit/llvm2ice_tests/return-int-arg.ll
deleted file mode 100644
index eced214983fb4ec2d17dfe70233f9e358c245dd6..0000000000000000000000000000000000000000
--- a/tests_lit/llvm2ice_tests/return-int-arg.ll
+++ /dev/null
@@ -1,22 +0,0 @@
-; Simple test of functions returning one of its arguments.
-
-; RUN: %p2i -i %s --args --verbose inst | FileCheck %s
-; RUN: %p2i -i %s --args --verbose none | FileCheck --check-prefix=ERRORS %s
-; RUN: %p2i -i %s --insts | %szdiff %s | FileCheck --check-prefix=DUMP %s
-
-define i32 @func_single_arg(i32 %a) {
-; CHECK: define i32 @func_single_arg
-entry:
-  ret i32 %a
-; CHECK: ret i32 %a
-}
-
-define i32 @func_multiple_args(i32 %a, i32 %b, i32 %c) {
-; CHECK: func_multiple_args
-entry:
-  ret i32 %c
-; CHECK: ret i32 %c
-}
-
-; ERRORS-NOT: ICE translation error
-; DUMP-NOT: SZ