[InstrProf] Remove duplicate definition of IntPtrT

In 16e74fd (for #82711) a duplicate definition of `IntPtrT` was
added to `InstrProfiling.h`, leading to warnings:

    compiler-rt/lib/profile/InstrProfiling.h:52:15: warning: redefinition of typedef 'IntPtrT' is a C11 feature [-Wtypedef-redefinition]
       52 | typedef void *IntPtrT;
          |               ^
    compiler-rt/lib/profile/InstrProfiling.h:34:15: note: previous definition is here
       34 | typedef void *IntPtrT;
          |               ^

Fix the warnings by removing the duplicate typedef.

Author: DimitryAndric

compiler-rt/lib/profile/InstrProfiling.h

@@ -49,7 +49,6 @@ typedef struct ValueProfNode {
 #include "profile/InstrProfData.inc"
 } ValueProfNode;
 
-typedef void *IntPtrT;
 typedef struct COMPILER_RT_ALIGNAS(INSTR_PROF_DATA_ALIGNMENT) VTableProfData {
 #define INSTR_PROF_VTABLE_DATA(Type, LLVMType, Name, Initializer) Type Name;
 #include "profile/InstrProfData.inc"