Revert "INSTALL: add information on option no-fuzz-test"

This reverts commit 7f9ae888.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

INSTALL

@@ -320,11 +320,6 @@
                    platforms and should never be used in production environments.
                    See the file fuzz/README.md for further details.
 
-  no-fuzz-test
-                   Don't runt the fuzz test suite when testing. Use with
-                   caution, as those tests may be important.  However, that
-                   suite is particularly slow, and is therefore skippable.
-
   no-gost
                    Don't build support for GOST based ciphersuites. Note that
                    if this feature is enabled then GOST ciphersuites are only