[bsp] remove unused file from project

bsp/imxrt1052-evk/project.uvprojx

@@ -10,7 +10,7 @@
       <TargetName>RT-Thread IMXRT1052</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::ARMCC</pCCUsed>
+      <pCCUsed>5060528::V5.06 update 5 (build 528)::ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -405,11 +405,6 @@
               <FileType>1</FileType>
               <FilePath>applications\sdio_test.c</FilePath>
             </File>
-            <File>
-              <FileName>rtgui_demo.c</FileName>
-              <FileType>1</FileType>
-              <FilePath>.\applications\rtgui_demo.c</FilePath>
-            </File>
           </Files>
         </Group>
         <Group>