arm64: sigcontext.h: delete duplicated word

Drop the repeated word "the".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20200726003207.20253-4-rdunlap@infradead.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/uapi/asm/sigcontext.h

@@ -179,7 +179,7 @@ struct sve_context {
  * The same convention applies when returning from a signal: a caller
  * will need to remove or resize the sve_context block if it wants to
  * make the SVE registers live when they were previously non-live or
- * vice-versa.  This may require the the caller to allocate fresh
+ * vice-versa.  This may require the caller to allocate fresh
  * memory and/or move other context blocks in the signal frame.
  *
  * Changing the vector length during signal return is not permitted: