[fusl] Remove code for unsupported architectures

fusl/arch/mips/bits/fenv.h

Index: fusl/arch/mips/bits/fenv.h
diff --git a/fusl/arch/mips/bits/fenv.h b/fusl/arch/mips/bits/fenv.h
deleted file mode 100644
index 6f3a93e158fa480dc1ce5ed1d34af71a914e5f39..0000000000000000000000000000000000000000
--- a/fusl/arch/mips/bits/fenv.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifdef __mips_soft_float
-#define FE_ALL_EXCEPT 0
-#define FE_TONEAREST 0
-#else
-#define FE_INEXACT 4
-#define FE_UNDERFLOW 8
-#define FE_OVERFLOW 16
-#define FE_DIVBYZERO 32
-#define FE_INVALID 64
-
-#define FE_ALL_EXCEPT 124
-
-#define FE_TONEAREST 0
-#define FE_TOWARDZERO 1
-#define FE_UPWARD 2
-#define FE_DOWNWARD 3
-#endif
-
-typedef unsigned short fexcept_t;
-
-typedef struct { unsigned __cw; } fenv_t;
-
-#define FE_DFL_ENV ((const fenv_t*)-1)