gfxstream: drop dead variables

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33384>

src/gfxstream/codegen/scripts/cereal/counting.py

@@ -372,7 +372,6 @@ class VulkanCountingCodegen(VulkanTypeIterator):
         if lenAccessGuard is not None:
             self.cgen.beginIf(lenAccessGuard)
         self.cgen.beginFor("uint32_t i = 0", "i < %s" % lenAccess, "++i")
-        self.cgen.stmt("size_t l = %s[i] ? strlen(%s[i]) : 0" % (access, access))
         self.genCount("sizeof(uint32_t) + (%s[i] ? strlen(%s[i]) : 0)" % (access, access))
         self.cgen.endFor()
         if lenAccessGuard is not None:

src/gfxstream/codegen/scripts/cereal/encoder.py

@@ -367,7 +367,6 @@ def emit_parameter_encode_write_packet_info(typeInfo, api, cgen):
         cgen.stmt("if (queueSubmitWithCommandsEnabled) packetSize_%s -= 8" % api.name)
 
     cgen.stmt("uint8_t* streamPtr = %s->reserve(packetSize_%s)" % (STREAM, api.name))
-    cgen.stmt("uint8_t* packetBeginPtr = streamPtr")
     cgen.stmt("uint8_t** streamPtrPtr = &streamPtr")
     cgen.stmt("uint32_t opcode_%s = OP_%s" % (api.name, api.name))