Everywhere: Remove unnecessary clang-format offs

Mostly due to the fact that clang-format allows aligned comments via
AlignTrailingComments.

We could also use raw string literals in inline asm, which clang-format
deals with properly (and would be nicer in a lot of places).

Userland/Libraries/LibC/net/if.h

@@ -48,7 +48,6 @@ struct ifreq {
         unsigned int ifru_index;
     } ifr_ifru;
 
-    // clang-format off
 #define ifr_addr ifr_ifru.ifru_addr           // address
 #define ifr_dstaddr ifr_ifru.ifru_dstaddr     // other end of p-to-p link
 #define ifr_broadaddr ifr_ifru.ifru_broadaddr // broadcast address
@@ -65,7 +64,6 @@ struct ifreq {
 #define ifr_index ifr_ifru.ifru_index         // interface index
 #define ifr_llprio ifr_ifru.ifru_metric       // link layer priority
 #define ifr_hwaddr ifr_ifru.ifru_hwaddr       // MAC address
-    // clang-format on
 };
 
 __END_DECLS

Userland/Libraries/LibC/netinet/ip_icmp.h

@@ -44,7 +44,6 @@ struct icmphdr {
     } un;
 };
 
-// clang-format off
 #define ICMP_ECHOREPLY 0       // Echo Reply
 #define ICMP_DEST_UNREACH 3    // Destination Unreachable
 #define ICMP_SOURCE_QUENCH 4   // Source Quench
@@ -59,6 +58,5 @@ struct icmphdr {
 #define ICMP_ADDRESS 17        // Address Mask Request
 #define ICMP_ADDRESSREPLY 18   // Address Mask Reply
 #define NR_ICMP_TYPES 18
-//clang-format on
 
 __END_DECLS

Userland/Libraries/LibC/regex.h

@@ -102,7 +102,6 @@ enum __RegexAllFlags {
     __Regex_Last = __Regex_SkipTrimEmptyMatches
 };
 
-// clang-format off
 // Values for the cflags parameter to the regcomp() function:
 #define REG_EXTENDED __Regex_Extended                // Use Extended Regular Expressions.
 #define REG_ICASE __Regex_Insensitive                // Ignore case in match.
@@ -116,7 +115,6 @@ enum __RegexAllFlags {
 
 //static_assert (sizeof(FlagsUnderlyingType) * 8 >= regex::POSIXFlags::Last << 1), "flags type too small")
 #define REG_SEARCH __Regex_Last << 1
-// clang-format on
 
 int regcomp(regex_t*, const char*, int);
 int regexec(const regex_t*, const char*, size_t, regmatch_t[], int);