[AMDGPU] Removed XFAIL from hsa-gfx940-v3.s. NFC.

Handling of big endian was fixed in D88858.

Author: rampitec

llvm/test/MC/AMDGPU/hsa-gfx940-v3.s

@@ -3,9 +3,6 @@
 // RUN: llvm-readelf -S -r -s %t | FileCheck --check-prefix=READOBJ %s
 // RUN: llvm-objdump -s -j .rodata %t | FileCheck --check-prefix=OBJDUMP %s
 
-// big endian not supported
-// XFAIL: powerpc-, powerpc64-, s390x, mips-, mips64-, sparc
-
 // READOBJ: Section Headers
 // READOBJ: .text   PROGBITS {{[0-9a-f]+}} {{[0-9a-f]+}} {{[0-9a-f]+}} {{[0-9]+}} AX {{[0-9]+}} {{[0-9]+}} 256
 // READOBJ: .rodata PROGBITS {{[0-9a-f]+}} {{[0-9a-f]+}}        000080 {{[0-9]+}}  A {{[0-9]+}} {{[0-9]+}} 64