Remove unnecessary quotes

Bug: 173737347
Test: treehugger
Change-Id: Id49741240ecfe74aa006e58540c16a4b0d8b8ff4
diff --git a/pixel3_mainline/device.mk b/pixel3_mainline/device.mk
index e394c60..4f159c5 100644
--- a/pixel3_mainline/device.mk
+++ b/pixel3_mainline/device.mk
@@ -25,7 +25,7 @@
     device/linaro/dragonboard/init.common.usb.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.pixel3_mainline.usb.rc \
     device/linaro/dragonboard/common.kl:$(TARGET_COPY_OUT_VENDOR)/usr/keylayout/pixel3_mainline.kl
 
-ifneq ("$(wildcard $(PIXEL3_KERNEL_DIR)/Image.gz-dtb)","")
+ifneq (,$(wildcard $(PIXEL3_KERNEL_DIR)/Image.gz-dtb))
     PRODUCT_COPY_FILES += $(PIXEL3_KERNEL_DIR)/Image.gz-dtb:kernel
     PIXEL3_KERNEL_FOUND := true
 else