[ARM][NFC] Remove redundant sub-expressions (#122911)

This PR removes redundant sub-expressions `Mnemonic != "vqmovnt"`, which
is mentioned in https://pvs-studio.com/en/blog/posts/cpp/1188/.

Author: CoTinker

llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp

@@ -6663,9 +6663,9 @@ StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic, StringRef ExtraToken,
       Mnemonic != "vshllt" && Mnemonic != "vrshrnt" && Mnemonic != "vshrnt" &&
       Mnemonic != "vqrshrunt" && Mnemonic != "vqshrunt" &&
       Mnemonic != "vqrshrnt" && Mnemonic != "vqshrnt" && Mnemonic != "vmullt" &&
-      Mnemonic != "vqmovnt" && Mnemonic != "vqmovunt" &&
-      Mnemonic != "vqmovnt" && Mnemonic != "vmovnt" && Mnemonic != "vqdmullt" &&
-      Mnemonic != "vpnot" && Mnemonic != "vcvtt" && Mnemonic != "vcvt") {
+      Mnemonic != "vqmovnt" && Mnemonic != "vqmovunt" && Mnemonic != "vmovnt" &&
+      Mnemonic != "vqdmullt" && Mnemonic != "vpnot" && Mnemonic != "vcvtt" &&
+      Mnemonic != "vcvt") {
     unsigned VCC =
         ARMVectorCondCodeFromString(Mnemonic.substr(Mnemonic.size() - 1));
     if (VCC != ~0U) {