tests/run-tests: Update names of tests that may need skipping.

tests/run-tests

@@ -249,6 +249,7 @@ def run_tests(pyb, tests, args):
 
     if not has_complex:
         skip_tests.add('float/complex1.py')
+        skip_tests.add('float/complex1_intbig.py')
         skip_tests.add('float/int_big_float.py')
         skip_tests.add('float/true_value.py')
         skip_tests.add('float/types.py')
@@ -285,7 +286,7 @@ def run_tests(pyb, tests, args):
             skip_tests.add('extmod/urandom_basic.py')       # requires urandom
             skip_tests.add('extmod/urandom_extra.py')       # requires urandom
         elif args.target == 'esp8266':
-            skip_tests.add('float/float2int.py')            # requires at least fp32, there's float2int_fp30.py instead
+            skip_tests.add('float/float2int_intbig.py')     # requires at least fp32, there's float2int_fp30_intbig.py instead
             skip_tests.add('float/string_format.py')        # requires at least fp32, there's string_format_fp30.py instead
             skip_tests.add('float/bytes_construct.py')      # requires fp32
             skip_tests.add('float/bytearray_construct.py')  # requires fp32