Platform: PSoC64: S-IRQ: fix ArmClang compiling error

Commit e3c75a4955e665e78d55b22f07db73d31a6bf101 ("Platform: PSoC64: S-IRQ: timer interrupt handlers") caused the following compilation errors:
"<tf-m>/.../armclang/startup_psoc64_s.s", line 131: Error: A1108E: Multiply defined symbol 'TFM_TIMER0_IRQ_Handler'
"<tf-m>/.../armclang/startup_psoc64_s.s", line 131: Error: A1131E: Bad symbol type for exported symbol 'TFM_TIMER0_IRQ_Handler'
"<tf-m>/.../armclang/startup_psoc64_s.s", line 131: Warning: A1464W: ENDP/ENDFUNC without corresponding PROC/FUNC
"<tf-m>/.../armclang/startup_psoc64_ns.s", line 463: Error: A1131E: Bad symbol type for exported symbol 'TIMER1_Handler'
"<tf-m>/.../armclang/startup_psoc64_ns.s", line 630: Error: A1108E: Multiply defined symbol 'TIMER1_Handler'

Signed-off-by: Alamy Liu <alamy.liu@cypress.com>
Change-Id: If75c40698d2acf185b900513e80c814a9c6ae647
diff --git a/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_ns.s b/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_ns.s
index 61d0a0c..2b6ab4b 100644
--- a/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_ns.s
+++ b/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_ns.s
@@ -61,7 +61,6 @@
                 EXPORT  __ramVectors
                 IMPORT  Cy_SysIpcPipeIsrCm4
                 IMPORT  Cy_Flash_ResumeIrqHandler
-                IMPORT  TIMER1_Handler
 
 __Vectors       DCD     __initial_sp              ; Top of Stack
                 DCD     Reset_Handler             ; Reset Handler
diff --git a/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_s.s b/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_s.s
index 647ac38..6a82e4b 100644
--- a/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_s.s
+++ b/platform/ext/target/cypress/psoc64/Device/Source/armclang/startup_psoc64_s.s
@@ -47,7 +47,6 @@
                 IMPORT  PendSV_Handler
                 IMPORT  NvicMux7_IRQHandler
                 IMPORT  Cy_SysIpcPipeIsrCm0
-                IMPORT  TFM_TIMER0_IRQ_Handler
 
 __Vectors       ;Core Interrupts
                 DCD     |Image$$ARM_LIB_STACK_MSP$$ZI$$Limit|  ; Top of Stack