chore: remove temp functions

Signed-off-by: Krishna Pandey <[email protected]>

Author: krishna2803

libc/src/__support/FPUtil/bfloat16.h

@@ -57,27 +57,6 @@ struct BFloat16 {
     uint32_t x_bits = static_cast<uint32_t>(bits) << 16U;
     return cpp::bit_cast<float>(x_bits);
   }
-
-  LIBC_INLINE constexpr BFloat16 operator-() const {
-    fputil::FPBits<bfloat16> result(*this);
-    result.set_sign(result.is_pos() ? Sign::NEG : Sign::POS);
-    return result.get_val();
-  }
-
-  // TODO: this need to be changed!
-  LIBC_INLINE constexpr BFloat16 operator+(BFloat16 x) {
-    float a = static_cast<float>(*this);
-    float b = static_cast<float>(x);
-    return BFloat16(a + b);
-  }
-
-  // TODO: this need to be changed!
-  LIBC_INLINE constexpr BFloat16 operator-(BFloat16 x) {
-    float a = static_cast<float>(*this);
-    float b = static_cast<float>(x);
-    return BFloat16(a - b);
-  }
-
 }; // struct BFloat16
 
 } // namespace fputil