test/pp: cleanup

tests/pp/15.c

@@ -1,26 +0,0 @@
-#define Y(x) Z(x)
-#define X Y
-X(1)
-X(X(1))
-X(X(X(X(X(1)))))
-
-#define A B
-#define B A
-return A + B;
-
-#undef A
-#undef B
-
-#define A B+1
-#define B A
-return A + B;
-
-#define A1 B1+1
-#define B1 C1+2
-#define C1 A1+3
-return A1 + B1;
-
-#define i() x
-#define n() 1
-i()i()n()n()i()
-i()+i()-n()+n()-