Remove redundant space in LLVM float testcases header

Signed-off-by: Jim Tsung-Chun Lin <[email protected]>

rvv-intrinsic-generator/rvv_intrinsic_gen/generator.py

@@ -452,7 +452,7 @@ def write_file_header(self, has_float_type):
 """)
     float_llvm_header = (r"""// REQUIRES: riscv-registered-target
 // RUN: %clang_cc1 -triple riscv64 -target-feature +v -target-feature +zfh \
-// RUN:   -target-feature +experimental-zvfh -disable-O0-optnone  \
+// RUN:   -target-feature +experimental-zvfh -disable-O0-optnone \
 // RUN:   -emit-llvm %s -o - | opt -S -passes=mem2reg | \
 // RUN:   FileCheck --check-prefix=CHECK-RV64 %s