Arm64: Remove forced csp alignment to 16 byte values for Nvidia chips.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index ca82ce709da5ac6d8e43e1672ee08b1ddf893c6d..9f2fc38cb23d2af07533c905350eb799405591d0 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -438,11 +438,6 @@ DEFINE_BOOL(enable_vldr_imm, false,
 DEFINE_BOOL(force_long_branches, false,
             "force all emitted branches to be in long mode (MIPS only)")
 
-// cpu-arm64.cc
-DEFINE_BOOL(enable_always_align_csp, true,
-            "enable alignment of csp to 16 bytes on platforms which prefer "
-            "the register to always be aligned (ARM64 only)")
-
 // bootstrapper.cc
 DEFINE_STRING(expose_natives_as, NULL, "expose natives in global object")
 DEFINE_STRING(expose_debug_as, NULL, "expose debug in global object")