Revert "[clang-repl] XFAIL riscv targets in simple-exception test case"

This reverts commit 123223a as the test
is now passing.

Author: hahnjo

clang/test/Interpreter/simple-exception.cpp

@@ -1,7 +1,7 @@
 // clang-format off
 // UNSUPPORTED: system-aix
-// XFAIL for arm, arm64, riscv, or running on Windows.
-// XFAIL: target={{(arm|riscv).*}}, system-windows
+// XFAIL for arm and arm64, or running on Windows.
+// XFAIL: target=arm{{.*}}, system-windows
 // RUN: cat %s | clang-repl | FileCheck %s
 
 // Incompatible with msan. It passes with -O3 but fail -Oz. Interpreter