/ATOM  .{6} H  /
/HETATM.{6} HOH/

##</code><code>##

use strict;

while (<DATA>) {
    my $data = $_;
    print $data 
    	if ($data !~ /(?:ATOM  .{6} H  )|(?:HETATM.{6} HOH)/);
}

__DATA__
ATOM    601  H   LEU A  75     -17.070 -16.002   2.409  1.00 55.63           N  
ATOM    602  CA  LEU A  75     -16.343 -16.746   3.444  1.00 55.50           C  
ATOM    603  C   LEU A  75     -16.499 -18.263   3.300  1.00 55.55           C  
ATOM    604  H   LEU A  75     -16.645 -18.789   2.195  1.00 55.50           O  
ATOM    605  CB  LEU A  75     -16.776 -16.283   4.844  1.00 55.51           C  
TER     606      LEU A  75   
ATOM   1185  O   LEU B  75      26.292  -4.310  16.940  1.00 55.45           O  
ATOM   1186  CB  LEU B  75      23.881  -1.551  16.797  1.00 55.32           C  
TER    1187      LEU B  75                                                      
HETATM 1188  HOH SRT A1076     -17.263  11.260  28.634  1.00 59.62           H  
HETATM 1189  HA  SRT A1076     -19.347  11.519  28.341  1.00 59.42           H  
HETATM 1190  H3  SRT A1076     -17.157  14.303  28.677  1.00 58.00           H  
HETATM 1191  HOH SRT A1076     -15.110  13.610  28.816  1.00 57.77           H  
HETATM 1192  O1  SRT A1076     -17.028  11.281  31.131  1.00 62.63           O  
ATOM    295  HB2 ALA A  18       4.601  -9.393   7.275  1.00  0.00           H  
ATOM    296  HB3 ALA A  18       3.340  -9.147   6.043  1.00  0.00           H  
TER     297      ALA A  18                                                                                                                     

##</code><code>##

# Output
# ATOM    602  CA  LEU A  75     -16.343 -16.746   3.444  1.00 55.50           C  
# ATOM    603  C   LEU A  75     -16.499 -18.263   3.300  1.00 55.55           C  
# ATOM    605  CB  LEU A  75     -16.776 -16.283   4.844  1.00 55.51           C  
# TER     606      LEU A  75   
# ATOM   1185  O   LEU B  75      26.292  -4.310  16.940  1.00 55.45           O  
# ATOM   1186  CB  LEU B  75      23.881  -1.551  16.797  1.00 55.32           C  
# TER    1187      LEU B  75                                                      
# HETATM 1189  HA  SRT A1076     -19.347  11.519  28.341  1.00 59.42           H  
# HETATM 1190  H3  SRT A1076     -17.157  14.303  28.677  1.00 58.00           H  
# HETATM 1192  O1  SRT A1076     -17.028  11.281  31.131  1.00 62.63           O  
# ATOM    295  HB2 ALA A  18       4.601  -9.393   7.275  1.00  0.00           H  
# ATOM    296  HB3 ALA A  18       3.340  -9.147   6.043  1.00  0.00           H  
# TER     297      ALA A  18