Remove annotations with constexpr params

These are not used anywhere in the tree and are hence not supported.
These are being removed from hidl-gen so this code is being removed.

Bug: N/A
Test: hidl-gen -Lcheck android.hardware.tests.expression@1.0
Change-Id: Ia19746da8ba361c7f29cc8732058a27cdc7a1bfe
diff --git a/tests/expression/1.0/IExpression.hal b/tests/expression/1.0/IExpression.hal
index 36aed60..039897a 100644
--- a/tests/expression/1.0/IExpression.hal
+++ b/tests/expression/1.0/IExpression.hal
@@ -215,7 +215,6 @@
     MY_INT32_MIN_PLUS_1, // 0x80000001
   };
 
-  @callflow(key=Constants:CONST_FOO + 1)
   foo1(int32_t[Constants:CONST_FOO + 1] array);
   foo2(int32_t[5 + 8] array);
   foo3(int32_t[Constants:MAX_ARRAY_SIZE] array);
diff --git a/tests/expression/1.0/IExpressionExt.hal b/tests/expression/1.0/IExpressionExt.hal
index 8b56ec6..e721978 100644
--- a/tests/expression/1.0/IExpressionExt.hal
+++ b/tests/expression/1.0/IExpressionExt.hal
@@ -36,7 +36,6 @@
         SixteenColors my16Colors;
     };
 
-    @callflow(key=@1.0::IExpression.Constants:MAX_ARRAY_SIZE)
     foo3(int32_t[IExpression.Constants:MAX_ARRAY_SIZE] array);
     foo2(SixteenColors array);
     foo1(int32_t[Constants:CONST_FOO + 5] array);